Decrease build time

- by enabling parallel execution
- removing references to deprecated repo

Test: make
Bug: 200725337
Change-Id: I571af7a461f9a3526cc8f24142a605d51eca1386

build.gradle

@@ -2,7 +2,6 @@ buildscript {
     repositories {
         mavenCentral()
         google()
-        jcenter()
     }
     dependencies {
         classpath GRADLE_CLASS_PATH

gradle.properties

@@ -1,6 +1,7 @@
 # Until all the dependencies move to android X
 android.useAndroidX = true
 android.enableJetifier = true
+org.gradle.parallel=true
 
 ANDROID_X_VERSION=1+