Remove obsolete skips

The following bugs seem to be fixed:

* containers#6510 (e2e tests) - podman rmi gives "layer not known"

* containers#9915 (buildah-bud tests) - podman build --arch

* containers#10248 - spurious warning from first-ever invocation
  of rootless podman

Signed-off-by: Ed Santiago <santiago@redhat.com>

test/buildah-bud/apply-podman-deltas

@@ -157,8 +157,7 @@ skip "FIXME FIXME FIXME podman save/load has been fixed (but not yet used in Bui
 
 ###############################################################################
 # BEGIN tests which are skipped due to actual podman bugs.
-skip "FIXME: podman #9915" \
-     "bud with --arch flag"
+
 
 ###############################################################################
 # Done.

test/e2e/images_test.go

@@ -219,7 +219,6 @@ WORKDIR /test
 	})
 
 	It("podman pull by digest and list --all", func() {
-		Skip("FIXME-8165: 'rmi -af' fails with 'layer not known' (#6510)")
 		// Prevent regressing on issue #7651.
 		digestPullAndList := func(noneTag bool) {
 			session := podmanTest.Podman([]string{"pull", ALPINEAMD64DIGEST})

test/system/001-basic.bats

@@ -15,13 +15,6 @@ function setup() {
 @test "podman version emits reasonable output" {
     run_podman version
 
-    # FIXME FIXME FIXME: #10248: nasty message on Ubuntu cgroups v1, rootless
-    if [[ "$output" =~ "overlay test mount with multiple lowers failed" ]]; then
-        if is_rootless; then
-            lines=("${lines[@]:1}")
-        fi
-    fi
-
     # First line of podman-remote is "Client:<blank>".
     # Just delete it (i.e. remove the first entry from the 'lines' array)
     if is_remote; then