ref(metric-meta): Removes all metric meta code from Relay #15894

Job	Run time
Lint	3m 8s
Lint	3m 8s
Test (macos-latest)	2m 39s
Test (macos-latest)	2m 39s
Lint Rust Default Features	1m 41s
Lint Rust Default Features	1m 41s
Test (windows-latest)	4m 48s
Test (windows-latest)	4m 48s
Setup build metadata	1s
Setup build metadata	1s
Test All Features (ubuntu-latest)	3m 13s
Test All Features (ubuntu-latest)	3m 13s
Integration Tests	10m 47s
Integration Tests	11m 5s
Test Python	1m 11s
Test Python	1m 11s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	7m 38s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	7m 38s
Build Docker Image (relay)	26s
Build Docker Image (relay)	26s
Sentry-Relay Integration Tests	13m 26s
Sentry-Relay Integration Tests	13m 26s
Publish Relay to DockerHub	0s
Publish Relay to DockerHub	0s
Upload build artifacts to gocd	0s
Upload build artifacts to gocd	0s
Publish Relay to GCR	0s
Publish Relay to GCR	0s
self-hosted-end-to-end	13m 29s
self-hosted-end-to-end	13m 29s
	2h 5m 12s

Provide feedback