sdp: remove dead code in sdp_parse.c
sdp: remove dead code in sdp_parse.c

Nokia CID 46231

BelledonneCommunications/sofia-sip,erdincay/sofia-sip,erdincay/sofia-sip,unispeech/sofia-sip,xhook/sofia-sip,BelledonneCommunications/sofia-sip,xhook/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,unispeech/sofia-sip,xhook/sofia-sip,xhook/sofia-sip,xhook/sofia-sip,erdincay/sofia-sip,unispeech/sofia-sip,unispeech/sofia-sip