Android: Fix multiple clang clazy warnings

Change-Id: I2ea6cebd16c09a8a4502f4719d99a9d85e5e7d02
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidavdmanager.cpp

@@ -378,7 +378,5 @@ bool AndroidAvdManager::waitForBooted(const QString &serialNumber,
     return false;
 }
 
-static QStringList avdErrorPaths;
-
 } // namespace Internal
 } // namespace Android