Revert "OpenAPI v3.1 support, experimental re-implementation using libopenapi (oapi-codegen#2197)"

This reverts commit 5206145.

Author: jamietanna

Makefile

@@ -19,34 +19,34 @@ lint: tools
 	# run the root module explicitly, to prevent recursive calls by re-invoking `make ...` top-level
 	$(GOBIN)/golangci-lint run ./...
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh lint
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && env GOBIN=$(GOBIN) make lint'
 
 lint-ci: tools
 	# for the root module, explicitly run the step, to prevent recursive calls
 	$(GOBIN)/golangci-lint run ./... --output.text.path=stdout --timeout=5m
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh lint-ci
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && env GOBIN=$(GOBIN) make lint-ci'
 
 generate:
 	# for the root module, explicitly run the step, to prevent recursive calls
 	go generate ./...
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh generate
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && make generate'
 
 test:
 	# for the root module, explicitly run the step, to prevent recursive calls
 	go test -cover ./...
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh test
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && make test'
 
 tidy:
 	# for the root module, explicitly run the step, to prevent recursive calls
 	go mod tidy
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh tidy
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && make tidy'
 
 tidy-ci:
 	# for the root module, explicitly run the step, to prevent recursive calls
 	tidied -verbose
 	# then, for all child modules, use a module-managed `Makefile`
-	GOBIN=$(GOBIN) ./scripts/foreach-module.sh tidy-ci
+	git ls-files '**/*go.mod' -z | xargs -0 -I{} bash -xc 'cd $$(dirname {}) && make tidy-ci'

README.md

@@ -393,9 +393,7 @@ We can see that this provides the best means to focus on the implementation of t
 - Single-file output
 - Support multiple OpenAPI files by having a package-per-OpenAPI file
 - Support of OpenAPI 3.0
-  - OpenAPI 3.1 support is in experimental form, as a complete rewrite using [libopenapi](https://github.com/pb33f/libopenapi). Please look in the
-    `./experimental` directory. This is potentially the future V3 of `oapi-codegen` and is functionally complete, just not deeply tested yet. Many OpenAPI 3.1
-    features are supported, such as webhooks and callbacks.
+  - OpenAPI 3.1 support is [awaiting upstream support](https://github.com/oapi-codegen/oapi-codegen/issues/373)
   - Note that this does not include OpenAPI 2.0 (aka Swagger)
 - Extract parameters from requests, to reduce work required by your implementation
 - Implicit `additionalProperties` are ignored by default ([more details](#additional-properties-additionalproperties))