Merge pull request firebase#527 from SUPERCILEX/gradle

Remove apply constants from module build.gradle

Author: samtstern

app/build.gradle

@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'com.neenbedankt.android-apt'
-apply from: "../constants.gradle"
 apply from: '../library/quality/quality.gradle'
 
 android {