TR-core/unix: define gamma correction things only for TT, TR does not use it

core/embed/unix/common.c

@@ -165,7 +165,9 @@ uint32_t hal_ticks_ms() {
 }
 
 static int SDLCALL emulator_event_filter(void *userdata, SDL_Event *event) {
+#if defined TREZOR_MODEL_T
   float gamma = display_gamma(0);
+#endif
   switch (event->type) {
     case SDL_QUIT:
       trezor_shutdown();

core/embed/unix/display-unix.c

@@ -121,6 +121,7 @@ static void prepare_gamma_lut(float gamma) {
   }
 }
 
+#if defined TREZOR_MODEL_T
 static void gamma_correct_buffer_to_display(void) {
   // Gamma correct all the pixels in BUFFER_TO_DISPLAY.
   pixel_color *pixels = (pixel_color *)BUFFER_TO_DISPLAY->pixels;
@@ -131,6 +132,7 @@ static void gamma_correct_buffer_to_display(void) {
     }
   }
 }
+#endif
 
 float display_gamma(float gamma) {
   float prev_gamma = DISPLAY_GAMMA;