Remove dynamically constructed feature flags starting with `prometheus_transaction_`
Problem
During the review of active feature flags on GitLab.com we've noticed that some feature flags are constructed dynamically. Namely prometheus_transaction_
.
It seems that these feature flags are always enabled. The only caller of transaction_metric
pass use_feature_flag: true
. I couldn't find any usages of transaction_metric
which does not enable the feature flag.
Proposal
Remove dynamically constructed feature flags prometheus_transaction_*
.