build.gradle : remove signing stuff for fast debug apk build.

build.gradle

@@ -22,40 +22,6 @@ android {
         versionCode 4
     }
 
-    signingConfigs {
-        debug {
-            storeFile file("/path/to/debug.keystore")
-            storePassword "android"
-            keyAlias "androiddebugkey"
-            keyPassword "android"
-        }
-        release {
-            storeFile file("/path/to/debug.keystore")
-            storePassword "android"
-            keyAlias "androiddebugkey"
-            keyPassword "android"
-        }
-    }
-
-    buildTypes {
-        debug {
-            applicationIdSuffix ".debug"
-            versionNameSuffix "-debug"
-            signingConfig signingConfigs.debug
-            debuggable true
-            zipAlignEnabled false
-            minifyEnabled false
-        }
-        release {
-            versionNameSuffix "-release"
-            signingConfig signingConfigs.release
-            debuggable false
-            zipAlignEnabled true
-            minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
-
     sourceSets {
         main {
             manifest.srcFile "AndroidManifest.xml"