Remove reference to gcc-musl in README (#56)

Removing an old reference to a `gcc-musl` image which no longer exists.

copying @imjasonh !

Signed-off-by: Michelle McAveety <135155059+mcaveety@users.noreply.github.com>

profile/README.md

@@ -117,7 +117,6 @@ Examples:
 
  - [go](https://github.com/chainguard-images/images/tree/main/images/go)
  - [gcc-glibc](https://github.com/chainguard-images/images/tree/main/images/gcc-glibc)
- - [gcc-musl](https://github.com/chainguard-images/images/tree/main/images/gcc-musl)
  - [jdk](https://github.com/chainguard-images/images/tree/main/images/jdk)
  - [maven](https://github.com/chainguard-images/images/tree/main/images/maven)
  - [bazel](https://github.com/chainguard-images/images/tree/main/images/bazel)