Use precompiled script plugins

This is a clean-up for b/64551265.

Bug: 64551265
Test: existing
Change-Id: I8bcaa9cae61e73e73f3b063869541eb4b42f37d1
diff --git a/build.gradle b/build.gradle
index 75486bf..0381898 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,5 @@
-apply from: "$rootDir/buildSrc/base/baseJava.gradle"
+apply plugin: 'com.android.tools.java-library'
 
-apply plugin: 'maven'
 apply plugin: 'sdk-java-lib'
 
 group = "com.android.tools.build"