Bug 1411654 - Pre: Gradle is no longer experimental; IntelliJ not supported. r=maliu

IntelliJ should still work, but we're committed to Android Studio at
this point.

MozReview-Commit-ID: 3BaXB4dh4vA

--HG--
extra : rebase_source : a17d797c8c2c70e792c0556e74b964d4975a315b

python/mozbuild/mozbuild/config_status.py

@@ -38,13 +38,10 @@ ANDROID_IDE_ADVERTISEMENT = '''
 ADVERTISEMENT
 
 You are building Firefox for Android. After your build completes, you can open
-the top source directory in IntelliJ or Android Studio directly and build using
-Gradle.  See the documentation at
+the top source directory in Android Studio directly and build using Gradle.
+See the documentation at
 
 https://developer.mozilla.org/en-US/docs/Simple_Firefox_for_Android_build
-
-PLEASE BE AWARE THAT GRADLE AND INTELLIJ/ANDROID STUDIO SUPPORT IS EXPERIMENTAL.
-You should verify any changes using |mach build|.
 =============
 '''.strip()