Remove the vitess-mixin #828

Job	Run time
Set push variable	1s
Build and push vttestserver (mysql80)	1m 54s
Build and push lite (latest)	2m 41s
Build and push lite (percona80)	2m 25s
Build and push (bullseye, vtadmin)	1m 19s
Build and push (bullseye, vtorc)	41s
Build and push (bullseye, vtgate)	32s
Build and push (bullseye, vttablet)	39s
Build and push (bullseye, mysqlctld)	33s
Build and push (bullseye, mysqlctl)	29s
Build and push (bullseye, vtctl)	24s
Build and push (bullseye, vtctlclient)	38s
Build and push (bullseye, vtctld)	59s
Build and push (bullseye, vtctldclient)	39s
Build and push (bullseye, logrotate)	16s
Build and push (bullseye, logtail)	20s
Build and push (bullseye, vtbackup)	48s
Build and push (bullseye, vtexplain)	32s
Build and push (bookworm, vtadmin)	1m 5s
Build and push (bookworm, vtorc)	43s
Build and push (bookworm, vtgate)	42s
Build and push (bookworm, vttablet)	29s
Build and push (bookworm, mysqlctld)	28s
Build and push (bookworm, mysqlctl)	40s
Build and push (bookworm, vtctl)	33s
Build and push (bookworm, vtctlclient)	40s
Build and push (bookworm, vtctld)	1m 2s
Build and push (bookworm, vtctldclient)	27s
Build and push (bookworm, logrotate)	22s
Build and push (bookworm, logtail)	29s
Build and push (bookworm, vtbackup)	34s
Build and push (bookworm, vtexplain)	38s
	24m 42s

Provide feedback