Remove Corrupt Account Warning

as mentioned in #1676
Preperation for stable-release.

src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.java

@@ -274,7 +274,6 @@ public class FileDisplayActivity extends HookActivity
         // always AFTER setContentView(...) in onCreate(); to work around bug in its implementation
 
         upgradeNotificationForInstantUpload();
-        upgradeNotificationForCorruptAccounts();
     }
 
     /**
@@ -323,45 +322,6 @@ public class FileDisplayActivity extends HookActivity
         }
     }
 
-    /**
-     * TODO: remove after 2.0.0 final release
-     */
-    private void upgradeNotificationForCorruptAccounts() {
-        boolean showWarning = PreferenceManager.getDefaultSharedPreferences(this)
-                .getBoolean(KEY_SHOW_ACCOUNT_WARNING, true);
-        int version = getVersion();
-
-        // check show warning, version > 1.4.3 and <= 2.0.0RCx
-        if (showWarning && version > 10040299 && version < 20000099) {
-            final Context context = this;
-
-            // show info pop-up
-            new AlertDialog.Builder(this, R.style.Theme_ownCloud_Dialog)
-                    .setTitle(R.string.common_warning)
-                    .setMessage(R.string.corrupt_account_info)
-                    .setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
-                        public void onClick(DialogInterface dialog, int which) {
-                            dialog.dismiss();
-                            PreferenceManager.getDefaultSharedPreferences(context)
-                                    .edit().putBoolean(KEY_SHOW_ACCOUNT_WARNING, false).apply();
-                        }
-                    })
-                    .setIcon(R.drawable.ic_warning)
-                    .setCancelable(false)
-                    .show();
-        }
-    }
-
-    public int getVersion() {
-        int version = 0;
-        try {
-            version = getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
-        } catch (PackageManager.NameNotFoundException e) {
-            return version;
-        }
-        return version;
-    }
-
     @Override
     public void onRequestPermissionsResult(int requestCode,
                                            String permissions[], int[] grantResults) {