Attempt n.1 to fix the back action

First attempt to fix the back button while compossing a status, so the
dialog telling the user to save or delete the draft isn't ignored.

husky/app/src/main/java/com/keylesspalace/tusky/components/compose/ComposeActivity.kt

@@ -1389,8 +1389,6 @@ class ComposeActivity : BaseActivity(),
         }
 
         handleCloseButton()
-
-        super.onBackPressed()
     }
 
     override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {