Remove unnecessary math.h and limits.h includes

Change-Id: I28c898f869ed3f03b08ff55f2972a38667c755ad
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

src/corelib/tools/qrect.cpp

@@ -36,8 +36,6 @@
 #include "qdebug.h"
 #include "qmath.h"
 
-#include <math.h>
-
 QT_BEGIN_NAMESPACE
 
 /*!

src/gui/image/qimage.cpp

@@ -47,7 +47,6 @@
 #include <ctype.h>
 #include <stdlib.h>
 #include <limits.h>
-#include <math.h>
 #include <qpa/qplatformpixmap.h>
 #include <private/qdrawhelper_p.h>
 #include <private/qmemrotate_p.h>

src/gui/painting/qcolor.cpp

@@ -38,7 +38,6 @@
 #include "qvariant.h"
 #include "qdebug.h"
 
-#include <math.h>
 #include <stdio.h>
 #include <limits.h>
 

src/gui/painting/qcosmeticstroker.cpp

@@ -34,7 +34,6 @@
 #include "qcosmeticstroker_p.h"
 #include "private/qpainterpath_p.h"
 #include <qdebug.h>
-#include <math.h>
 
 QT_BEGIN_NAMESPACE
 

src/gui/painting/qpathsimplifier.cpp

@@ -38,8 +38,6 @@
 #include <QtCore/qpoint.h>
 #include <QtCore/qalgorithms.h>
 
-#include <math.h>
-
 #include <private/qopengl_p.h>
 #include <private/qrbtree_p.h>
 

src/gui/text/qfontmetrics.cpp

@@ -38,9 +38,6 @@
 #include "qfont_p.h"
 #include "qfontengine_p.h"
 
-#include <math.h>
-
-
 QT_BEGIN_NAMESPACE
 
 

src/gui/util/qgridlayoutengine.cpp

@@ -35,8 +35,6 @@
 
 #ifndef QT_NO_GRAPHICSVIEW
 
-#include <math.h>
-
 #include "qgridlayoutengine_p.h"
 #include "qvarlengtharray.h"
 

src/plugins/printsupport/cups/qcupsprintengine.cpp

@@ -46,8 +46,6 @@
 #include <QtGui/qpagelayout.h>
 
 #include <cups/cups.h>
-#include <limits.h>
-#include <math.h>
 
 #include "private/qcore_unix_p.h" // overrides QT_OPEN
 

src/printsupport/dialogs/qprintpreviewdialog.cpp

@@ -53,8 +53,6 @@
 #include <QtWidgets/qformlayout.h>
 #include <QtCore/QCoreApplication>
 
-#include <math.h>
-
 #ifndef QT_NO_PRINTPREVIEWDIALOG
 
 static void initResources()

src/printsupport/kernel/qprintengine_pdf.cpp

@@ -42,10 +42,6 @@
 #include "qprinterinfo.h"
 #include <QtGui/qpagelayout.h>
 
-#include <limits.h>
-#include <math.h>
-
-
 #ifdef Q_OS_UNIX
 #include "private/qcore_unix_p.h" // overrides QT_OPEN
 #endif

src/widgets/graphicsview/qgraphicsitem.cpp

@@ -762,8 +762,6 @@
 #include <private/qapplication_p.h>
 #include <private/qgesturemanager_p.h>
 
-#include <math.h>
-
 QT_BEGIN_NAMESPACE
 
 static inline void _q_adjustRect(QRect *rect)

src/widgets/widgets/qdatetimeedit.cpp

@@ -31,7 +31,6 @@
 **
 ****************************************************************************/
 
-#include <math.h>
 #include <private/qdatetimeedit_p.h>
 #include <qabstractspinbox.h>
 #include <qapplication.h>

src/widgets/widgets/qspinbox.cpp

@@ -41,7 +41,6 @@
 #include <qvalidator.h>
 #include <qdebug.h>
 
-#include <math.h>
 #include <float.h>
 
 QT_BEGIN_NAMESPACE