Clean up CODEOWNERS (#31715)

crypto-team apparently doesn't exist and skrah no longer has write access. Thanks @isidentical for noticing this.

.github/CODEOWNERS

@@ -32,13 +32,13 @@ Python/traceback.c            @iritkatriel
 Python/pythonrun.c            @iritkatriel
 
 # Hashing
-**/*hashlib*                  @python/crypto-team @tiran
-**/*pyhash*                   @python/crypto-team @tiran
-**/*sha*                      @python/crypto-team @tiran
-**/*md5*                      @python/crypto-team @tiran
-**/*blake*                    @python/crypto-team @tiran
-/Modules/_blake2/**           @python/crypto-team @tiran
-/Modules/_sha3/**             @python/crypto-team @tiran
+**/*hashlib*                  @tiran
+**/*pyhash*                   @tiran
+**/*sha*                      @tiran
+**/*md5*                      @tiran
+**/*blake*                    @tiran
+/Modules/_blake2/**           @tiran
+/Modules/_sha3/**             @tiran
 
 # logging
 **/*logging*                  @vsajip
@@ -61,14 +61,6 @@ Python/pythonrun.c            @iritkatriel
 **/*import*.c                 @brettcannon @encukou @ericsnowcurrently @ncoghlan @warsaw
 **/*import*.py                @brettcannon @encukou @ericsnowcurrently @ncoghlan @warsaw
 
-
-# SSL
-**/*ssl*                      @python/crypto-team
-**/*.pem                      @python/crypto-team
-
-# CSPRNG
-Python/bootstrap_hash.c       @python/crypto-team
-
 # Dates and times
 **/*datetime*                 @pganssle @abalkin
 **/*str*time*                 @pganssle @abalkin
@@ -132,7 +124,7 @@ Lib/ast.py                    @isidentical
 **/*bisect*                   @rhettinger
 **/*heapq*                    @rhettinger
 **/*functools*                @rhettinger
-**/*decimal*                  @rhettinger @skrah
+**/*decimal*                  @rhettinger
 
 **/*dataclasses*              @ericvsmith