Merge bitcoin/bitcoin#22418: release: Remove gitian

ab9c34237a release: remove gitian (fanquake)

Pull request description:

  Note that this doesn't yet touch any glibc back compat related code.

ACKs for top commit:
  laanwj:
    Code review ACK ab9c34237a

Tree-SHA512: 8e2fe3ec1097f54bb11ab9136b43818d90eab5dbb0a663ad6a552966ada4bdb49cc12ff4e66f0ec0ec5400bda5c81f3a3ce70a9ebb6fe1e0db612da9f00a51a7

test/lint/lint-shell.sh

@@ -14,10 +14,6 @@ disabled=(
     SC2086 # Double quote to prevent globbing and word splitting.
     SC2162 # read without -r will mangle backslashes.
 )
-disabled_gitian=(
-    SC2094 # Make sure not to read and write the same file in the same pipeline.
-    SC2129 # Consider using { cmd1; cmd2; } >> file instead of individual redirects.
-)
 
 EXIT_CODE=0
 
@@ -33,22 +29,4 @@ if ! "${SHELLCHECK_CMD[@]}" "$EXCLUDE" $SOURCED_FILES $(git ls-files -- '*.sh' |
     EXIT_CODE=1
 fi
 
-if ! command -v yq > /dev/null; then
-    echo "Skipping Gitian descriptor scripts checking since yq is not installed."
-    exit $EXIT_CODE
-fi
-
-EXCLUDE_GITIAN=${EXCLUDE}",$(IFS=','; echo "${disabled_gitian[*]}")"
-for descriptor in $(git ls-files -- 'contrib/gitian-descriptors/*.yml')
-do
-    script=$(basename "$descriptor")
-    # Use #!/bin/bash as gitian-builder/bin/gbuild does to complete a script.
-    echo "#!/bin/bash" > $script
-    yq -r .script "$descriptor" >> $script
-    if ! "${SHELLCHECK_CMD[@]}" "$EXCLUDE_GITIAN" $script; then
-        EXIT_CODE=1
-    fi
-    rm $script
-done
-
 exit $EXIT_CODE