Upgrade Gradle setup (#1084)

Summary:
Trying to dust off the build setup and make it work again with a modern Android Studio / JVM.

Removing all JCenter setup, too, as this is no longer supported.

Pull Request resolved: https://github.com/facebook/yoga/pull/1084

Test Plan:
`./gradlew :yoga-layout:assembleDebug` works already.
Looking if CI here likes this.

Reviewed By: mweststrate

Differential Revision: D28602272

Pulled By: passy

fbshipit-source-id: 0cb86f548cc6366ccefcc92c185d6e7772e75547

java/proguard-annotations/build.gradle

@@ -9,5 +9,3 @@ apply plugin: 'java'
 
 sourceCompatibility = '1.7'
 targetCompatibility = '1.7'
-
-apply from: rootProject.file('gradle/release.gradle')