Issues-2: Optimize size app and remove warning

app/build.gradle

@@ -27,7 +27,8 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
             buildConfigField "Integer", "DB_VERSION", "1"
             buildConfigField "Boolean", "TEST", "false"

app/src/main/AndroidManifest.xml

@@ -8,12 +8,6 @@
     <uses-permission
         android:name="android.permission.CAMERA"
         tools:node="remove" />
-    <uses-permission
-        android:name="android.permission.READ_PHONE_STATE"
-        tools:node="remove" />
-    <uses-permission
-        android:name="android.permission.INTERNET"
-        tools:node="remove" />
 
     <application
         android:allowBackup="false"