Remove extra comments in the build scripts

build.gradle

@@ -1,5 +1,3 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
 buildscript {
     repositories {
         google()
@@ -7,9 +5,6 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.5.2'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
     }
 }