gpu_neon: rm some unused stuff

Author: notaz

plugins/gpu_neon/psx_gpu/psx_gpu.h

@@ -175,7 +175,7 @@ typedef struct
 
   u8 triangle_winding;
 
-  u8 display_area_draw_enable;
+  u8 unused;
 
   u8 current_texture_page;
   u8 last_8bpp_texture_page;

plugins/gpu_neon/psx_gpu/psx_gpu_parse.c

@@ -687,7 +687,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *ex_regs,
         else
           psx_gpu->render_state_base &= ~RENDER_STATE_DITHER;
 
-        psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
+        //psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
         ex_regs[1] = list[0];
         break;
 
@@ -1620,7 +1620,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *ex_reg
         else
           psx_gpu->render_state_base &= ~RENDER_STATE_DITHER;
 
-        psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
+        //psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
         ex_regs[1] = list[0];
         break;