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/qmakeprojectmanager/externaleditors.cpp

@@ -36,11 +36,9 @@
 #include <qtsupport/qtkitinformation.h>
 #include <designer/designerconstants.h>
 
-#include <QProcess>
 #include <QDebug>
-
-#include <QTcpSocket>
 #include <QTcpServer>
+#include <QTcpSocket>
 
 using namespace ProjectExplorer;
 using namespace Utils;