Get rid of three needless instances of DM_DRAW_OPTION_NO_MCOL.

It would be good to get rid of this entirely, ideally decision
about mcols can be taken at material level and not done per face. More
work needs to be done for that to work though.

source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLRasterizer.cpp

@@ -776,7 +776,7 @@ static DMDrawOption CheckTexDM(MTexPoly *mtexpoly, const bool has_mcol, int matn
 			unsigned char rgba[4];
 			current_polymat->GetMaterialRGBAColor(rgba);
 			glColor4ubv((const GLubyte *)rgba);
-			return DM_DRAW_OPTION_NO_MCOL;
+			return DM_DRAW_OPTION_NORMAL;
 		}
 		return DM_DRAW_OPTION_NORMAL;
 	}