Remove unnecessary wxOSX_USE_COCOA guards in Cocoa-only file.

The #if wxOSX_USE_COCOA seems unnecessary in a file that is used in
wxOSX/Cocoa only so simply remove it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66029 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/cocoa/colour.mm

@@ -19,11 +19,10 @@
 
 #include "wx/osx/private.h"
 
-#if wxOSX_USE_COCOA
 wxColour::wxColour(WX_NSColor col)
 {
     size_t noComp = [col numberOfComponents];
-    
+
     CGFloat *components = NULL;
     if ( noComp >= 1 && noComp <= 4 )
     {
@@ -36,6 +35,5 @@ wxColour::wxColour(WX_NSColor col)
 
 WX_NSColor wxColour::OSXGetNSColor()
 {
-    return [NSColor colorWithDeviceRed:m_red / 255.0 green:m_green / 255.0 blue:m_blue / 255.0 alpha:m_alpha / 255.0]; 
+    return [NSColor colorWithDeviceRed:m_red / 255.0 green:m_green / 255.0 blue:m_blue / 255.0 alpha:m_alpha / 255.0];
 }
-#endif