Minor cleanup on settings.gradle (#74910)

- remove outcommented code
- remove unused variable

settings.gradle

@@ -106,14 +106,8 @@ addSubProjects('', new File(rootProject.projectDir, 'qa'))
 addSubProjects('test', new File(rootProject.projectDir, 'test/external-modules'))
 addSubProjects('', new File(rootProject.projectDir, 'x-pack'))
 
-List startTasks = gradle.startParameter.taskNames
-
-
 include projects.toArray(new String[0])
 
-//project(':build-tools').projectDir = new File(rootProject.projectDir, 'buildSrc')
-//project(':build-tools:reaper').projectDir = new File(rootProject.projectDir, 'buildSrc/reaper')
-
 project(":libs").children.each { libsProject ->
   libsProject.name = "elasticsearch-${libsProject.name}"
 }