projectexplorer: remove unneeded qtnetwork dependency

Change-Id: I8fcd342a2d69bf7dc91b9703d8a90c9942c7cb10
Reviewed-on: http://codereview.qt.nokia.com/2519

Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/projectexplorer/projectexplorer.pro

@@ -2,7 +2,6 @@ TEMPLATE = lib
 TARGET = ProjectExplorer
 QT += xml \
     script \
-    network \
     declarative
 include(../../qtcreatorplugin.pri)
 include(projectexplorer_dependencies.pri)

src/plugins/projectexplorer/userfileaccessor.cpp

@@ -49,7 +49,6 @@
 #include <QtGui/QMainWindow>
 #include <QtCore/QFile>
 #include <QtGui/QMessageBox>
-#include <QtNetwork/QHostInfo>
 
 using namespace ProjectExplorer;