Mark installable jars with installable: true

Most jars don't need to be installed on the device.  Instead of
using java_library and java_library_static to distinguish between
them make java_library and java_library_static identical and use
installable: true to identify the few jars that need to be dexed
and installed on the device.

Bug: 110885583
Test: m checkbuild
Change-Id: I579da7c1a712ec4fb49e288e7f3ab369cb75baf4
diff --git a/test-mock/Android.bp b/test-mock/Android.bp
index 8fb6fda..848fd7c 100644
--- a/test-mock/Android.bp
+++ b/test-mock/Android.bp
@@ -18,6 +18,7 @@
 // ===================================
 java_library {
     name: "android.test.mock",
+    installable: true,
 
     // Needs to be consistent with the repackaged version of this make target.
     java_version: "1.8",