Revert "LibM: Always include <math.h> instead of <LibM/math.h>"

This reverts commit dc12cbca41.

Sadly this broke the build due to some confusion about <new>.
Reverting until this can be solved fully.

Applications/PixelPaint/EllipseTool.cpp

@@ -31,7 +31,7 @@
 #include <LibGUI/Menu.h>
 #include <LibGUI/Painter.h>
 #include <LibGfx/Rect.h>
-#include <math.h>
+#include <LibM/math.h>
 
 namespace PixelPaint {
 

Applications/PixelPaint/LineTool.cpp

@@ -30,7 +30,7 @@
 #include <LibGUI/Action.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/Painter.h>
-#include <math.h>
+#include <LibM/math.h>
 
 namespace PixelPaint {
 

Applications/PixelPaint/RectangleTool.cpp

@@ -31,7 +31,7 @@
 #include <LibGUI/Menu.h>
 #include <LibGUI/Painter.h>
 #include <LibGfx/Rect.h>
-#include <math.h>
+#include <LibM/math.h>
 
 namespace PixelPaint {
 

Applications/PixelPaint/SprayTool.cpp

@@ -33,7 +33,7 @@
 #include <LibGUI/Menu.h>
 #include <LibGUI/Painter.h>
 #include <LibGfx/Bitmap.h>
-#include <math.h>
+#include <LibM/math.h>
 #include <stdio.h>
 
 namespace PixelPaint {

Applications/SoundPlayer/SampleWidget.cpp

@@ -27,7 +27,7 @@
 #include "SampleWidget.h"
 #include <LibAudio/Buffer.h>
 #include <LibGUI/Painter.h>
-#include <math.h>
+#include <LibM/math.h>
 
 SampleWidget::SampleWidget()
 {

Applications/SoundPlayer/SoundPlayerWidget.cpp

@@ -30,7 +30,7 @@
 #include <LibGUI/Button.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/MessageBox.h>
-#include <math.h>
+#include <LibM/math.h>
 
 SoundPlayerWidget::SoundPlayerWidget(GUI::Window& window, NonnullRefPtr<Audio::ClientConnection> connection)
     : m_window(window)