chore: remove obsolete jenkins configuration for sonar (#3803)

Signed-off-by: Richard Salac <[email protected]>

gradle/sonar.gradle

@@ -1,7 +1,5 @@
 apply plugin: "org.sonarqube"
 
-ext.pullRequest = System.getenv()["CHANGE_ID"] ?: null
-
 sonar {
     properties {
         property "sonar.host.url", project.getProperty("sonar.host.url")
@@ -13,18 +11,6 @@ sonar {
         property "sonar.projectVersion", project.version
         property "sonar.language", "java"
         property "sonar.links.scm", "https://github.com/zowe/api-layer"
-        property "sonar.links.ci", System.getenv()["BUILD_URL"] ?: null
-
-        if (pullRequest != null) {
-            property "sonar.pullrequest.key", System.getenv()["CHANGE_ID"] ?: null
-            property "sonar.pullrequest.branch", System.getenv()["CHANGE_BRANCH"] ?: null
-            property "sonar.pullrequest.base", System.getenv()["CHANGE_TARGET"] ?: null
-            property "sonar.github.pullRequest", pullRequest
-            property "sonar.github.repository", "zowe/api-layer"
-            property "sonar.github.oauth",  project.hasProperty("sonar.github.oauth") ? project.getProperty("sonar.github.oauth") : null
-        } else {
-            property "sonar.branch.name", System.getenv()["BRANCH_NAME"] ?: null
-        }
     }
 }