x11/wallutils: drop libheif < 1.12 workaround after 92593edb

x11/wallutils/files/patch-libheif-1.10

-Drop after graphics/libheif is updated to 1.12 or later.
-https://github.com/strukturag/libheif/commit/115c96a96a58
-
-vendor/github.com/xyproto/heic/heic.go:269:37: could not determine kind of name for C.heif_suberror_Wrong_tile_image_pixel_depth
-
---- vendor/github.com/xyproto/heic/heic.go.orig	2021-11-12 12:53:21 UTC
-+++ vendor/github.com/xyproto/heic/heic.go
-@@ -266,8 +266,6 @@ const (
- 
- 	SuberrorInvalidPixiBox = C.heif_suberror_Invalid_pixi_box
- 
--	SuberrorWrongTileImagePixelDepth = C.heif_suberror_Wrong_tile_image_pixel_depth
--
- 	// --- Unsupported_feature ---
- 
- 	// Image was coded with an unsupported compression method.