RT2724: Remove extra declaration

Extra SSL_get_selected_srtp_profile() declaration in ssl/srtp.h
causes -Werror builds to fail.
Reviewed-by: NTim Hudson <tjh@openssl.org>

ssl/srtp.h

@@ -132,7 +132,6 @@ extern "C" {
 
 int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles);
 int SSL_set_tlsext_use_srtp(SSL *ctx, const char *profiles);
-SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s);
 
 STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *ssl);
 SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s);