workflows/pull-request: don't build tag build in container

The GO_FLAGS setup through recursive Make invocations is a hassle, and we don't
use the resulting binaries anyways -- we just want to see that the build works.
We get that from a plain, on-the-runner build sans docker, too.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>

.github/workflows/pull-request.yaml

@@ -143,7 +143,7 @@ jobs:
           arch: arm64
         - os: linux
           run: ubuntu-24.04
-          targets: ci-go-ci-build-linux-static
+          targets: ci-build-linux-static
           go_tags: GO_TAGS="-tags=opa_no_oci"
           variant_name: opa_no_oci
           arch: arm64

Makefile

@@ -263,7 +263,6 @@ CI_GOLANG_DOCKER_MAKE := $(DOCKER) run \
 	-w /src \
 	-e GOCACHE=/src/.go/cache \
 	-e GOARCH=$(GOARCH) \
-	-e GO_TAGS="$(GO_TAGS)" \
 	-e CGO_ENABLED=$(CGO_ENABLED) \
 	-e WASM_ENABLED=$(WASM_ENABLED) \
 	-e FUZZ_TIME=$(FUZZ_TIME) \