meta-ibm:witherspoon: remove croserver

Witherspoon is running tight on space, and as our primary hardware CI
machine, we need to keep it going.

croserver can still be loaded into /tmp and run when needed

Tested:
- Reduced image size by ~100KB
- Will rely on CI to regression test

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I49b375d32462f0564b8310b430394077d0e887ed
diff --git a/meta-ibm/recipes-phosphor/packagegroups/packagegroup-op-apps.bbappend b/meta-ibm/recipes-phosphor/packagegroups/packagegroup-op-apps.bbappend
new file mode 100644
index 0000000..3561360
--- /dev/null
+++ b/meta-ibm/recipes-phosphor/packagegroups/packagegroup-op-apps.bbappend
@@ -0,0 +1 @@
+RDEPENDS:${PN}-system:remove:witherspoon = "croserver"