alacritty: remove unused patch

Author: sylvestre

src/uu/dircolors/README.md

@@ -9,12 +9,6 @@ dircolors -b > /PATH_TO_COREUTILS/tests/fixtures/dircolors/bash_def.expected
 dircolors -c > /PATH_TO_COREUTILS/tests/fixtures/dircolors/csh_def.expected
 ```
 
-Apply the patches to include more terminals that support colors:
-
-```shell
-git apply /PATH_TO_COREUTILS/src/uu/dircolors/alacritty-supports-colors.patch
-```
-
 Run the tests:
 
 ```shell