remove internal/matchers (#6777)

Fixes #6523

Remove internal/matchers from code base and its code generation

Co-authored-by: Robert Pająk <[email protected]>
Co-authored-by: Damien Mathieu <[email protected]>

Author: 3 people

.golangci.yml

@@ -66,8 +66,6 @@ linters:
               desc: Do not use cross-module internal packages.
             - pkg: go.opentelemetry.io/otel/internal/internaltest
               desc: Do not use cross-module internal packages.
-            - pkg: go.opentelemetry.io/otel/internal/matchers
-              desc: Do not use cross-module internal packages.
         otlp-internal:
           files:
             - '!**/exporters/otlp/internal/**/*.go'

internal/gen.go

@@ -4,10 +4,6 @@
 // Package internal contains utility functions and internal implementations
 package internal // import "go.opentelemetry.io/otel/internal"
 
-//go:generate gotmpl --body=./shared/matchers/expectation.go.tmpl "--data={}" --out=matchers/expectation.go
-//go:generate gotmpl --body=./shared/matchers/expecter.go.tmpl "--data={}" --out=matchers/expecter.go
-//go:generate gotmpl --body=./shared/matchers/temporal_matcher.go.tmpl "--data={}" --out=matchers/temporal_matcher.go
-
 //go:generate gotmpl --body=./shared/internaltest/doc.go.tmpl "--data={}" --out=internaltest/doc.go
 //go:generate gotmpl --body=./shared/internaltest/text_map_carrier.go.tmpl "--data={}" --out=internaltest/text_map_carrier.go
 //go:generate gotmpl --body=./shared/internaltest/text_map_carrier_test.go.tmpl "--data={}" --out=internaltest/text_map_carrier_test.go