transport: remove unused function transports_are_declared()

The only use of this function has been removed with commit
159f11fefc ("jtag: set default "jtag_only" to uninitialized
transports").

Get rid of the unused function.

Change-Id: I79dd1d55bd54ed8edc39ed3443e6c3c01794f063
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5898
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

src/transport/transport.c

@@ -121,16 +121,6 @@ int allow_transports(struct command_context *ctx, const char * const *vector)
 	return ERROR_OK;
 }
 
-/**
- * Used to verify correct adapter driver initialization.
- *
- * @returns true if the adapter declares one or more transports.
- */
-bool transports_are_declared(void)
-{
-	return allowed_transports != NULL;
-}
-
 /**
  * Registers a transport.  There are general purpose transports
  * (such as JTAG), as well as relatively proprietary ones which are

src/transport/transport.h

@@ -92,8 +92,6 @@ COMMAND_HELPER(transport_list_parse, char ***vector);
 
 int allow_transports(struct command_context *ctx, const char * const *vector);
 
-bool transports_are_declared(void);
-
 bool transport_is_jtag(void);
 bool transport_is_swd(void);
 bool transport_is_dapdirect_jtag(void);