wined3d: Remove ENTER_GL/LEAVE_GL in IWineD3DCubeTextureImpl_PreLoad.

dlls/wined3d/cubetexture.c

@@ -125,7 +125,6 @@ static void WINAPI IWineD3DCubeTextureImpl_PreLoad(IWineD3DCubeTexture *iface) {
     }
     IWineD3DCubeTexture_BindTexture(iface);
 
-    ENTER_GL();
     /* If the texture is marked dirty or the srgb sampler setting has changed since the last load then reload the surfaces */
     if (This->baseTexture.dirty) {
         for (i = 0; i < This->baseTexture.levels; i++) {
@@ -152,7 +151,6 @@ static void WINAPI IWineD3DCubeTextureImpl_PreLoad(IWineD3DCubeTexture *iface) {
     } else {
         TRACE("(%p) Texture not dirty, nothing to do\n" , iface);
     }
-    LEAVE_GL();
 
     /* No longer dirty */
     This->baseTexture.dirty = FALSE;