Don't bother with separate Button variables in MainActivity

Author: yawnoc

app/src/main/java/io/github/yawnoc/strokeinput/MainActivity.java

@@ -37,13 +37,8 @@ protected void onCreate(final Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);
 
-    final Button inputSettingsButton =
-      findViewById(R.id.input_settings_button);
-    inputSettingsButton.setOnClickListener(this);
-    
-    final Button switchKeyboardButton =
-      findViewById(R.id.switch_keyboard_button);
-    switchKeyboardButton.setOnClickListener(this);
+    findViewById(R.id.input_settings_button).setOnClickListener(this);
+    findViewById(R.id.switch_keyboard_button).setOnClickListener(this);
 
   }