Drop rootwrap.d/ironic-lib.filters file

The file is included in the ironic-lib module and there is no
difference (beside some comments) in the files.

For packagers, this solves the problem that ironic-lib and ironic are
currently not installable together given that both packages contain
the same file.

Story: 2006604
Task: 36772
Depends-On: https://review.opendev.org/684771
Change-Id: I2d800d4c2616ccd9d9f12a2fe59e259def15dc6b

devstack/lib/ironic

@@ -1425,6 +1425,17 @@ function configure_ironic_conductor {
 
     configure_rootwrap ironic
 
+    # additional rootwrap config from ironic-lib
+    local ironic_lib_prefix
+    if use_library_from_git "ironic-lib"; then
+        ironic_lib_prefix=${GITDIR["ironic-lib"]}
+    else
+        # pip uses default python 'data' path
+        ironic_lib_prefix=$(python -c "import sysconfig; \
+            print(sysconfig.get_path('data'))")
+    fi
+    sudo install -o root -g root -m 644 $ironic_lib_prefix/etc/ironic/rootwrap.d/*.filters /etc/ironic/rootwrap.d
+
     # set up drivers / hardware types
     iniset $IRONIC_CONF_FILE DEFAULT enabled_hardware_types $IRONIC_ENABLED_HARDWARE_TYPES
 

releasenotes/notes/drop-ironic-lib-rootwrap-filters-f9224173289c1e30.yaml

@@ -0,0 +1,6 @@
+---
+other:
+  - |
+    The rootwrap filter file called "ironic-lib.filters" is no longer part
+    of Ironic. The same file is available from the ironic-lib module which is
+    already an install requirement.