pro, multitenant: remove broken process-level ekg stats

Fixes #3364.

This removes code that's only there to collect some metrics that were apparently never collected in production anyway, as confirmed by this slack discussion: https://hasurahq.slack.com/archives/CTRL7L1PZ/p1645547435034329

> We don't ever ingest these statsd metrics to lux, nor on HC AFAIK.

We're keeping the command line options for the moment to allow lux time to stop passing them.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3365
GitOrigin-RevId: bc6aa2c18a7d3eb0779ed17494662df5b7b54a76

cabal.project.freeze

@@ -135,8 +135,6 @@ constraints: any.Cabal ==3.2.1.0,
              any.either ==5.0.1.1,
              any.ekg-core ==0.1.1.7,
              any.ekg-json ==0.1.0.7,
-             any.ekg-statsd ==0.2.5.0,
-             any.ekg-wai ==0.1.0.3,
              any.entropy ==0.4.1.7,
              entropy -halvm,
              any.erf ==2.0.0.0,
@@ -430,8 +428,6 @@ constraints: any.Cabal ==3.2.1.0,
              any.void ==0.7.3,
              void -safe,
              any.wai ==3.2.3,
-             any.wai-app-static ==3.1.7.2,
-             wai-app-static -print,
              any.wai-extra ==3.1.8,
              wai-extra -build-example,
              any.wai-logger ==2.4.0,