fix: Remove the Makefile build support

Signed-off-by: ZPascal <pascal.zimmermann01@sap.com>

Author: ZPascal

Makefile

@@ -3,15 +3,6 @@ TARGET_ARCH ?= $(if $(filter true,$(LOCAL)),$(shell go env GOARCH),amd64)
 # renovate: dataSource=github-releases depName=helmfile/helmfile
 HELMFILE_VERSION ?= "1.5.3"
 
-build:
-	@ . ./scripts/detect-runtime.sh; \
-	if [ "$$CONTAINER_RUNTIME" = "podman" ]; then \
-		echo "Building with Podman is not yet supported via docker-bake.hcl."; \
-		echo "Use 'podman build' manually with the Dockerfiles in releases/."; \
-		exit 1; \
-	fi; \
-	docker buildx bake --file docker-bake.hcl --set "*.platform=linux/$(TARGET_ARCH)" $(BAKE_TARGETS)
-
 init: temp/certs/ca.key temp/certs/ca.crt temp/certs/ssh_key temp/certs/ssh_key.pub temp/secrets.sh temp/secrets.env
 
 temp/certs/ca.key temp/certs/ca.crt temp/certs/ssh_key temp/certs/ssh_key.pub temp/secrets.sh temp/secrets.env:
@@ -69,4 +60,4 @@ up: create-kind init install
 down: delete-kind
 	@ rm -rf temp
 
-.PHONY: build install login create-kind delete-kind up down create-org bootstrap bootstrap-complete
+.PHONY: install login create-kind delete-kind up down create-org bootstrap bootstrap-complete