evas: Remove context from some engine function

This is for canvas_alpha_get. context is never used.

src/lib/evas/canvas/evas_render.c

@@ -2959,7 +2959,7 @@ evas_render_updates_internal(Evas *eo_e,
      }
 
    /* phase 1.5. check if the video should be inlined or stay in their overlay */
-   alpha = ENFN->canvas_alpha_get(ENDT, ENCTX);
+   alpha = ENFN->canvas_alpha_get(ENDT);
 
    EINA_LIST_FOREACH(e->video_objects, ll, eo_obj)
      {

src/lib/evas/canvas/render2/evas_render2_old.c

@@ -274,8 +274,7 @@ _evas_render2_stage_render_do(Evas_Public_Data *e, Eina_Bool do_async EINA_UNUSE
    // XXX: actually render now (either in thread or in mainloop)
    // XXX:
    printf(" _evas_render2_stage_render_do %p\n", e);
-   alpha = e->engine.func->canvas_alpha_get(e->engine.data.output,
-                                            e->engine.data.context);
+   alpha = e->engine.func->canvas_alpha_get(e->engine.data.output);
    while ((uinf.surface =
            e->engine.func->output_redraws_next_update_get
            (e->engine.data.output,

src/lib/evas/include/evas_private.h

@@ -1363,7 +1363,7 @@ struct _Evas_Func
 
    void *(*context_new)                    (void *data);
    void *(*context_dup)                    (void *data, void *context);
-   Eina_Bool (*canvas_alpha_get)           (void *data, void *context);
+   Eina_Bool (*canvas_alpha_get)           (void *data);
    void (*context_free)                    (void *data, void *context);
    void (*context_clip_set)                (void *data, void *context, int x, int y, int w, int h);
    void (*context_clip_image_set)          (void *data, void *context, void *surface, int x, int y, Evas_Public_Data *evas, Eina_Bool do_async);

src/modules/evas/engines/buffer/evas_engine.c

@@ -165,7 +165,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/eglfs/evas_engine.c

@@ -864,7 +864,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/fb/evas_engine.c

@@ -185,7 +185,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/gl_cocoa/evas_engine.c

@@ -246,7 +246,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data EINA_UNUSED, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data EINA_UNUSED)
 {
    return EINA_TRUE;
 }

src/modules/evas/engines/gl_drm/evas_engine.c

@@ -1029,7 +1029,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/gl_sdl/evas_engine.c

@@ -352,7 +352,7 @@ eng_output_dump(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data EINA_UNUSED, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data EINA_UNUSED)
 {
    return 0;
 }

src/modules/evas/engines/gl_x11/evas_engine.c

@@ -1907,7 +1907,7 @@ eng_preload_make_current(void *data, void *doit)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re = (Render_Engine *)data;
    return re->generic.software.ob->alpha;

src/modules/evas/engines/psl1ght/evas_engine.c

@@ -415,7 +415,7 @@ eng_output_idle_flush(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/software_ddraw/evas_engine.c

@@ -112,7 +112,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data EINA_UNUSED, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data EINA_UNUSED)
 {
 #warning "We need to handle window with alpha channel."
    return EINA_FALSE;

src/modules/evas/engines/software_gdi/evas_engine.c

@@ -148,7 +148,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data EINA_UNUSED, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data EINA_UNUSED)
 {
 #warning "We need to handle window with alpha channel."
    return EINA_FALSE;

src/modules/evas/engines/software_generic/evas_engine.c

@@ -3442,7 +3442,7 @@ eng_font_hinting_can_hint(void *data EINA_UNUSED, int hinting)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data EINA_UNUSED, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data EINA_UNUSED)
 {
    return EINA_TRUE;
 }

src/modules/evas/engines/software_x11/evas_engine.c

@@ -445,7 +445,7 @@ eng_output_free(void *data)
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *context EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;
 

src/modules/evas/engines/wayland_egl/evas_engine.c

@@ -749,7 +749,7 @@ ob_err:
 }
 
 static Eina_Bool
-eng_canvas_alpha_get(void *data, void *info EINA_UNUSED)
+eng_canvas_alpha_get(void *data)
 {
    Render_Engine *re;