Improve build.gradle on arms

arms/build.gradle

@@ -16,6 +16,7 @@ android {
         versionCode rootProject.ext.android["versionCode"]
         versionName rootProject.ext.android["versionName"]
     }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -24,14 +25,6 @@ android {
     }
 }
 
-
-buildscript {
-    repositories {
-        jcenter()
-    }
-}
-
-
 dependencies {
     //support
     api(rootProject.ext.dependencies["support-v4"]) {
@@ -121,5 +114,4 @@ dependencies {
     testImplementation rootProject.ext.dependencies["junit"]
 }
 
-
 apply from: 'bintray.gradle'
\ No newline at end of file