[WIP] ✨ Update to code-generator/v3

Makefile

@@ -23,14 +23,6 @@ GOBIN_DIR=$(abspath ./bin )
 PATH := $(GOBIN_DIR):$(TOOLS_GOBIN_DIR):$(PATH)
 TMPDIR := $(shell mktemp -d)
 
-CODE_GENERATOR_VER := 572c29375f0e63c13b31c70931914c420a0a9d59
-CODE_GENERATOR_BIN := code-generator
-CODE_GENERATOR := $(TOOLS_DIR)/$(CODE_GENERATOR_BIN)-$(CODE_GENERATOR_VER)
-export CODE_GENERATOR # so hack scripts can use it
-
-$(CODE_GENERATOR):
-	GOBIN=$(TOOLS_GOBIN_DIR) $(GO_INSTALL) github.com/kcp-dev/code-generator/v2 $(CODE_GENERATOR_BIN) $(CODE_GENERATOR_VER)
-
 OPENSHIFT_GOIMPORTS_VER := c70783e636f2213cac683f6865d88c5edace3157
 OPENSHIFT_GOIMPORTS_BIN := openshift-goimports
 OPENSHIFT_GOIMPORTS := $(TOOLS_DIR)/$(OPENSHIFT_GOIMPORTS_BIN)-$(OPENSHIFT_GOIMPORTS_VER)
@@ -56,7 +48,7 @@ lint: $(GOLANGCI_LINT)
 tools: $(CODE_GENERATOR) $(OPENSHIFT_GOIMPORTS) $(GOLANGCI_LINT)
 .PHONY: tools
 
-codegen: $(CODE_GENERATOR)
+codegen:
 	go mod download
 	./hack/update-codegen.sh
 	$(MAKE) imports
@@ -79,4 +71,5 @@ verify: verify-codegen
 
 .PHONY: clean-generated
 clean-generated:
-	grep --exclude Makefile -l 'Code generated by kcp code-generator. DO NOT EDIT.' -r . | xargs rm
+	grep --exclude Makefile -l -e 'Code generated by [a-z-]*. DO NOT EDIT.' -r . | xargs rm -f
+	find . -type d -empty -delete