Remove obsolete replacement which.

This patched csh script has been replaced by a build of the C version.

tiger_only/bin/which

-#!/usr/bin/env LS_COLORS="" /bin/csh
-#
-# The above shebang line fixes intermittent errors like:
-# csh: Unknown colorls variable `rs'.
-#
-# DO NOT USE "csh -f"
-#
-# Copyright (c) 1983 The Regents of the University of California.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-#    must display the following acknowledgement:
-#       This product includes software developed by the University of
-#       California, Berkeley and its contributors.
-# 4. Neither the name of the University nor the names of its contributors
-#    may be used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
-#
-#       @(#)which.csh   5.5 (Berkeley) 4/18/91
-#
-
-#       which : tells you which program you get
-#
-
-# this program has been modified to adhere to current
-# which implementation details.
-
-# There is no longer any returned message if the the requested application is not found.
-# There is an exit code of "0" if all of the requested applications were found,
-# and an exit code of "1" if some of the requested applications were not found.
-# This matches current "which" behaviour on macOS systems.
-
-
-set prompt = "% "
-set noglob
-unset onenotfound
-foreach arg ( $argv )
-    set alius = `alias $arg`
-    switch ( $#alius )
-        case 0 :
-            breaksw
-        case 1 :
-            set arg = $alius[1]
-            breaksw
-        default :
-            echo ${arg}: "	" aliased to $alius
-            continue
-    endsw
-    unset found
-    if ( $arg:h != $arg:t ) then
-        if ( -e $arg ) then
-            echo $arg
-        else
-            echo $arg not found
-        endif
-        continue
-    else
-        foreach i ( $path )
-            if ( -x $i/$arg && ! -d $i/$arg ) then
-                echo $i/$arg
-                set found
-                break
-            endif
-        end
-    endif
-    if ( ! $?found ) then
-        set onenotfound
-    endif
-end
-
-if ( $?onenotfound ) then
-    exit 1
-endif