AndroidDeployQtStep: Make m_process local

There is no need to keep m_process as a class member,
since it's only used in just one function.

Change-Id: I156b978a18ab25a41b0e52d00fcb90c0f7f12ddd
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/android/androiddeployqtstep.h

@@ -112,7 +112,6 @@ private:
     Utils::FilePath m_command;
     Utils::FilePath m_workingDirectory;
     Utils::Environment m_environment;
-    Utils::QtcProcess *m_process = nullptr;
     AndroidDeviceInfo m_deviceInfo;
 };