pipeline {
  agent any
  parameters {
    string(name: 'foo')
  }
}

properties([
  parameters([
    string(name: 'foo'),
  ]),
])

import groovy.json.JsonOutput
import hudson.model.ParametersDefinitionProperty
import org.jenkinsci.plugins.workflow.multibranch.JobPropertyTrackerAction

def data = Jenkins.instance
    .allItems(Job.class)
    .collect {
        [
            id: it.fullName,
            actions: it.actions.collect {
                def action = [
                    type: it.class.name,
                    string: "${it}",
                ]
                if (it instanceof JobPropertyTrackerAction) {
                    action += [
                        jobPropertyDescriptors: it.jobPropertyDescriptors,
                    ]
                }
                action
            },
            properties: it.allProperties.collect {
                def property = [
                    type: it.class.name,
                    descriptor: [
                        type: it.descriptor.class.name,
                        category: it.descriptor.category,
                        displayName: it.descriptor.displayName,
                        id: it.descriptor.id,
                    ],
                ]
                if (it instanceof ParametersDefinitionProperty) {
                    property += [
                        parameterDefinitions: it.parameterDefinitions.collect {
                            [
                                type: it.class.name,
                                name: it.name,
                                description: it.description,
                            ]
                        }
                    ]
                }
                property
            },
        ]
    }
    .findAll { job ->
        [
            job.properties.countBy { it.type },
            job.properties.countBy { it.descriptor.type },
            job.properties.countBy { it.descriptor.id },
        ].any {
            it.any { _,count -> count > 1 }
        }
    }

println(JsonOutput.prettyPrint(JsonOutput.toJson(data)))

[
    {
        "id": "Demo/copy",
        "properties": [
            {
                "type": "jenkins.model.BuildDiscarderProperty",
                "descriptor": {
                    "type": "jenkins.model.BuildDiscarderProperty$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "Supprimer les anciens builds",
                    "id": "jenkins.model.BuildDiscarderProperty"
                }
            },
            {
                "type": "com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty",
                "descriptor": {
                    "type": "com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "GitLab connection",
                    "id": "com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty"
                }
            },
            {
                "type": "com.sonyericsson.rebuild.RebuildSettings",
                "descriptor": {
                    "type": "com.sonyericsson.rebuild.RebuildSettings$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "Rebuild Settings",
                    "id": "com.sonyericsson.rebuild.RebuildSettings"
                }
            },
            {
                "type": "hudson.model.ParametersDefinitionProperty",
                "descriptor": {
                    "type": "hudson.model.ParametersDefinitionProperty$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "Ce build a des param\u00e8tres",
                    "id": "hudson.model.ParametersDefinitionProperty"
                }
            },
            {
                "type": "hudson.plugins.jobConfigHistory.JobLocalConfiguration",
                "descriptor": {
                    "type": "hudson.plugins.jobConfigHistory.JobLocalConfiguration$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "changeReasonComment_holder",
                    "id": "hudson.plugins.jobConfigHistory.JobLocalConfiguration"
                }
            },
            {
                "type": "hudson.model.ParametersDefinitionProperty",
                "descriptor": {
                    "type": "hudson.model.ParametersDefinitionProperty$DescriptorImpl",
                    "category": {
                        "shortDescription": "Configurer les param\u00e8tres g\u00e9n\u00e9raux et les chemins de fichiers.",
                        "displayName": "Configurer le syst\u00e8me"
                    },
                    "displayName": "Ce build a des param\u00e8tres",
                    "id": "hudson.model.ParametersDefinitionProperty"
                }
            }
        ]
    }
]

while (job.getProperty(ParametersDefinitionProperty.class) != null) {
    job.removeProperty(ParametersDefinitionProperty.class)
}