OpenGL: remove UI_reinit_gl_state function

All line & point drawing is responsible for setting its own state (as of January 2016) making this redundant.

source/blender/editors/include/UI_interface.h

@@ -793,7 +793,6 @@ void UI_popup_handlers_remove_all(struct bContext *C, struct ListBase *handlers)
 void UI_init(void);
 void UI_init_userdef(void);
 void UI_reinit_font(void);
-void UI_reinit_gl_state(void);
 void UI_exit(void);
 
 /* Layout

source/blender/editors/interface/interface_draw.c

@@ -2011,15 +2011,3 @@ void ui_draw_dropshadow(const rctf *rct, float radius, float aspect, float alpha
 	
 	glDisable(GL_BLEND);
 }
-
-/**
- * Reset GL state (keep minimal).
- *
- * \note Blender's internal code doesn't assume these are reset,
- * but external callbacks may depend on their state.
- */
-void UI_reinit_gl_state(void)
-{
-	glLineWidth(1.0f);
-	glPointSize(1.0f);
-}

source/blender/editors/space_api/spacetypes.c

@@ -256,7 +256,6 @@ void ED_region_draw_cb_draw(const bContext *C, ARegion *ar, int type)
 	
 	for (rdc = ar->type->drawcalls.first; rdc; rdc = rdc->next) {
 		if (rdc->type == type) {
-			UI_reinit_gl_state();
 			rdc->draw(C, ar, rdc->customdata);
 		}
 	}