Remove CGC from data_availability checker #20385

Job	Run time
Check for 'skip-ci' label	1s
check-code	7m 1s
check-msrv	5m 19s
lockbud	14m 39s
target-branch-check	1s
beacon-chain-tests	21m 20s
debug-tests-ubuntu	9m 11s
network-tests	11m 27s
op-pool-tests	17m 8s
release-tests-ubuntu	6m 3s
release-tests-windows	11m 49s
slasher-tests	1m 38s
basic-simulator-ubuntu	14m 24s
cargo-udeps	7m 19s
compile-with-beta-compiler	15m 45s
ef-tests-ubuntu	6m 11s
execution-engine-integration-ubuntu	11m 24s
fallback-simulator-ubuntu	11m 54s
state-transition-vectors-ubuntu	2m 46s
cargo-sort	36s
cli-check	7m 26s
test-suite-success	0s
	3h 3m 22s

Provide feedback