Bug 1514402 - Don't use clang with android rt libs for regular android builds. r=froydnj

Differential Revision: https://phabricator.services.mozilla.com/D14641

--HG--
extra : moz-landing-system : lando

taskcluster/ci/build/android.yml

@@ -322,7 +322,7 @@ android-api-16/opt:
         - android-gradle-dependencies
         - android-ndk-linux
         - android-sdk-linux
-        - linux64-clang-android-cross
+        - linux64-clang
         - linux64-rust-android
         - linux64-rust-size
         - linux64-cbindgen