Removing setFrontFacing, using setFrontFacingWinding instead (#1931)

src/renderer_mtl.h

@@ -426,11 +426,6 @@ namespace bgfx { namespace mtl
 			[m_obj setBlendColorRed:_red green:_green blue:_blue alpha:_alpha];
 		}
 
-		void setFrontFacing(MTLWinding _frontFacing)
-		{
-			[m_obj setFrontFacing:_frontFacing];
-		}
-
 		void setCullMode(MTLCullMode _cullMode)
 		{
 			[m_obj setCullMode:_cullMode];

src/renderer_mtl.mm

@@ -4232,7 +4232,7 @@ namespace bgfx { namespace mtl
 				{
 					if (BGFX_STATE_FRONT_CCW & changedFlags)
 					{
-						rce.setFrontFacing((newFlags&BGFX_STATE_FRONT_CCW) ? MTLWindingCounterClockwise : MTLWindingClockwise);
+						rce.setFrontFacingWinding((newFlags&BGFX_STATE_FRONT_CCW) ? MTLWindingCounterClockwise : MTLWindingClockwise);
 					}
 
 					if (BGFX_STATE_CULL_MASK & changedFlags)