Remove two obsolete patches.

patch-tclUnixChan.c appears to have been a no-op all along, since
it is comparing literal device names, and we have no "/dev/cua".

patch-tclUnixSock.c was introduced on the basis that the nodename
returned by uname(3) was limited to 32 characters, which does not
appear to be the case now.

PORTREVISION not bumped since there should be no functional change.

PR: ports/92334
Submitted by: Donal Fellows <donal.k.fellows@manchester.ac.uk>

		(Tcl Core Team)