Remove biddisco from communication code owners

Author: msimberg

.github/CODEOWNERS

@@ -1,5 +1,5 @@
 * @bcumming @msimberg @RMeli
 docs/services/firecrest @jpdorsch @ekouts
-docs/software/communication @biddisco @Madeeks @msimberg
+docs/software/communication @Madeeks @msimberg
 docs/software/prgenv/linalg.md @finkandreas @msimberg
 docs/software/sciapps/cp2k.md @abussy @RMeli