Remove unneeded includes of QProcess from cpp files

QProcess wasn't used in these files.

Change-Id: I24900bcf312eb6ea1ca3bc0c753cebb505ec552b
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/vcsbase/vcsbaseclient.cpp

@@ -41,15 +41,11 @@
 #include <vcsbase/vcsoutputwindow.h>
 #include <vcsbase/vcsbaseplugin.h>
 
-#include <QStringList>
-#include <QDir>
-#include <QProcess>
-#include <QTextCodec>
 #include <QDebug>
 #include <QFileInfo>
-#include <QByteArray>
+#include <QStringList>
+#include <QTextCodec>
 #include <QVariant>
-#include <QProcessEnvironment>
 
 using namespace Utils;