Always exit and don't try to recover

The current code tries to recover from dropped connections and resets the
pcu state so it can keep running. However, this never worked correctly
which is why the -e option is used. This option exits the pcu as soon as
the internal state needs to be reset.

This patch removes this option and makes this behaviour default.

Ticket: SYS#390
Sponsored-by: On-Waves ehf
diff --git a/src/gprs_bssgp_pcu.h b/src/gprs_bssgp_pcu.h
index aedcfc0..32b6728 100644
--- a/src/gprs_bssgp_pcu.h
+++ b/src/gprs_bssgp_pcu.h
@@ -57,7 +57,6 @@
 	int bvc_sig_reset;
 	int bvc_reset;
 	int bvc_unblocked;
-	int exit_on_destroy;
 
 	/** callbacks below */
 
@@ -75,8 +74,7 @@
 		uint16_t nsvci, uint16_t bvci, uint16_t mcc, uint16_t mnc,
 		uint16_t lac, uint16_t rac, uint16_t cell_id);
 
-void gprs_bssgp_exit_on_destroy(void);
-void gprs_bssgp_destroy_or_exit(void);
+void gprs_bssgp_destroy(void);
 
 struct bssgp_bvc_ctx *gprs_bssgp_pcu_current_bctx(void);