Don't set MANPATH

All of this looks very obsolete, so I guess it's better to just rely on
man defaults.

.zshenv

@@ -69,34 +69,6 @@ then
     unsetopt NULL_GLOB
 fi
 
-if [ -r /etc/MANPATH ]
-then
-	MANPATH=`cat /etc/MANPATH`:$MANPATH
-else
-	ALL_PATH=/usr/local/qmail/man:/usr/man:/usr/local/man:/usr/X11R6/man:/usr/share/man:/usr/local/pgsql/man:/var/qmail/man:/usr/local/rrdtool-1.0.35/man
-	NEW_PATH=""
-
-	for i in ${(s/:/)ALL_PATH}
-	do
-		if test -d "$i"
-		then
-			case "$NEW_PATH" in
-			$i:*|*:$i|*:$i:*) ;;
-			*)
-				if test -z "$NEW_PATH"
-				then
-					NEW_PATH=$i
-				else
-					NEW_PATH=$NEW_PATH:$i
-				fi
-			esac
-		fi
-	done
-	MANPATH=$NEW_PATH
-fi
-export MANPATH
-
-
 case "`uname -sr`" in
 Linux*)
 	export LC_COLLATE=POSIX