Remove rest_octets.h

The MSC should not fiddle with low-level SI details like rest octets
anyway. Unfortunately simply removing the header is impossible as it
causes massive fallout due to missing includes. Fixed it as well.

The only other parameter which required removal is cell_ro_sel_par which
is not referenced anywhere in the code anyway.

Change-Id: Ibff77330de056fad4288cd4c48d016aad8105354
diff --git a/src/libcommon-cs/common_cs.c b/src/libcommon-cs/common_cs.c
index 8a28b72..bad8262 100644
--- a/src/libcommon-cs/common_cs.c
+++ b/src/libcommon-cs/common_cs.c
@@ -29,6 +29,7 @@
 #include <osmocom/msc/gsm_subscriber.h>
 #include <osmocom/msc/gsm_data.h>
 #include <osmocom/msc/gsm_04_11.h>
+#include <osmocom/msc/gsm_04_08.h>
 
 /* Warning: if bsc_network_init() is not called, some of the members of
  * gsm_network are not initialized properly and must not be used! (In