Replace bankd_client_fsm with rspro_client_fsm

There was a lot of similarity between the bankd_client_fsm (for the
client->bankd RSPRO connection) and the rspro_client_fsm (for the
client->server and the bankd->server RSPRO connections).

With the last few commits introducing the missing features to
rspro_client_fsm, we can completely obsolete bankd_client_fsm and
further simplify the codebase.

Change-Id: Icbe9881a0391fcd0c47e5d930dc764fc0cb1dfbf
diff --git a/src/Makefile.am b/src/Makefile.am
index fa0f732..35da621 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,12 +28,12 @@
 
 bin_PROGRAMS = osmo-remsim-client-st2
 
-remsim_client_SOURCES = remsim_client.c rspro_client_fsm.c bankd_client_fsm.c debug.c
+remsim_client_SOURCES = remsim_client.c rspro_client_fsm.c debug.c
 remsim_client_LDADD = $(OSMOCORE_LIBS) $(OSMOGSM_LIBS) $(OSMOABIS_LIBS) \
 		     libosmo-rspro.la
 
 osmo_remsim_client_st2_SOURCES = simtrace2-remsim_client.c \
-				 bankd_client_fsm.c rspro_client_fsm.c debug.c \
+				 rspro_client_fsm.c debug.c \
 				 simtrace2/apdu_dispatch.c \
 				 simtrace2/simtrace2-discovery.c \
 				 simtrace2/libusb_util.c