Remove android singning config

example/android/app/build.gradle

@@ -142,14 +142,6 @@ android {
             include "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
         }
     }
-    signingConfigs {
-        debug {
-            storeFile file('debug.keystore')
-            storePassword 'android'
-            keyAlias 'androiddebugkey'
-            keyPassword 'android'
-        }
-    }
     buildTypes {
         debug {
             signingConfig signingConfigs.debug