initialize Stetho only in debug build

app/src/main/kotlin/com/simplemobiletools/notes/App.kt

@@ -1,12 +1,12 @@
 package com.simplemobiletools.notes
 
 import android.app.Application
-
 import com.facebook.stetho.Stetho
 
 class App : Application() {
     override fun onCreate() {
         super.onCreate()
-        Stetho.initializeWithDefaults(this)
+        if (BuildConfig.DEBUG)
+            Stetho.initializeWithDefaults(this)
     }
 }