CI: remove build without cgo task

Podman is basically unusable without cgo, checking if it compiles
without adds no value and just tricks people into thinking it works when
it does not.

This means we do not need extra to NOP out a lot of cgo calls with
functions that just return an error like `XXX is not supported without
cgo`.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

.cirrus.yml

@@ -379,8 +379,6 @@ alt_build_task:
             ALT_NAME: 'Build Each Commit'
       - env:
             ALT_NAME: 'Windows Cross'
-      - env:
-            ALT_NAME: 'Build Without CGO'
       - env:
             ALT_NAME: 'Alt Arch. Cross'
     # This task cannot make use of the shared repo.tbz artifact.

Makefile

@@ -451,13 +451,6 @@ local-cross: $(CROSS_BUILD_TARGETS) ## Cross compile podman binary for multiple
 .PHONY: cross
 cross: local-cross
 
-.PHONY: build-no-cgo
-build-no-cgo:
-	BUILDTAGS="containers_image_openpgp exclude_graphdriver_btrfs \
-		exclude_graphdriver_devicemapper exclude_disk_quota" \
-	CGO_ENABLED=0 \
-	$(MAKE) all
-
 .PHONY: completions
 completions: podman podman-remote
 	# key = shell, value = completion filename

contrib/cirrus/runner.sh

@@ -276,9 +276,6 @@ function _run_altbuild() {
             make podman-remote-release-windows_amd64.zip
             make podman.msi
             ;;
-        *Without*)
-            make build-no-cgo
-            ;;
         *RPM*)
             make package
             ;;