Revert "k/proto: use log-level warn for missmatch crc"

[bharathv]

This reverts commit 36b01f4.

Backports Required

• none - not a bug fix
• none - this is a backport
• none - issue does not exist in previous branches
• none - papercut/not impactful enough to backport
• v24.2.x
• v24.1.x
• v23.3.x

Release Notes

[bharathv]

/dt

[vbotbuildovich]

ducktape was retried in https://buildkite.com/redpanda/redpanda/builds/54611#0192016a-6b67-488a-af99-77f333440287

[bharathv]

/ci-repeat 1
skip-units
dt-repeat=10
tests/rptest/tests/crc_failure_test.py

[bharathv]

/ci-repeat 1
skip-units
dt-repeat=10
tests/rptest/tests/crc_failure_test.py

[vbotbuildovich]

new failures in https://buildkite.com/redpanda/redpanda/builds/54654#019203ba-bf66-4cd2-978a-6ca86f8adc4a:

"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"
"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"

new failures in https://buildkite.com/redpanda/redpanda/builds/54654#019203bd-61a7-466c-96e7-811ea94771b6:

"rptest.tests.crc_failure_test.ShutdownTest.crc_failure_repro_test"