There's a closed pull request on the void-packages repository

SFML: update to 2.6.1
https://github.com/void-linux/void-packages/pull/47595

Description:
First-time contribution attempt. Previous version 2.5.1 in `void-packages` is over 5 years old. This one is very recent from 30th October.

#### Removed 1 patch:

No longer needed, the fix is already in the 2.6.1 sources.

#### Testing the changes
I tested the changes in this PR: **briefly**.

- Compiled / built,
- installed,
- did pre-install hooks,
- ~~then `pkg_install` step complains: `cannot stat '/destdir//SFML-2.6.1/usr/share/SFML': No such file or directory`~~
  - resolved now, the whole `./xbps-src pkg SFML` run succeeds. Also tried `i686` and `armv6l` out of curiosity, same.

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc, plus also `-a armv6l` and `-a i686`.