meta-romulus: Remove cooling-type

The cooling-type in phosphor-fan is optional, and Romulus is a
air-cooled system and does not require cooling-type application at all.
Remove the cooling-type app and the related configuration files.

Tested: Verify the generated phosphor-fan related hpp and cpp files are
        identical as before, and the system is able to power on and do
        fan monitor/control without problem.

Change-Id: I6dfb4f85c3367b04e4b77827c69e634c150c1dfb
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/meta-romulus/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend b/meta-romulus/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
index 920e529..6380ac2 100644
--- a/meta-romulus/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
+++ b/meta-romulus/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
@@ -1,2 +1,2 @@
-RDEPENDS_${PN}-inventory_append_romulus = " openpower-occ-control phosphor-cooling-type id-button"
+RDEPENDS_${PN}-inventory_append_romulus = " openpower-occ-control id-button"
 RDEPENDS_${PN}-extras_append_romulus = " phosphor-webui phosphor-image-signing"