The *texi2dvi scripts try to find /bin/ksh and /bin/bsh
when on ULTRIX and AIX respectively.  This causes shell.req
to find unneeded dependencies.

This patch removes the offending pieces of code.

--- texinfo/util/pdftexi2dvi
+++ texinfo/util/pdftexi2dvi
@@ -2,16 +2,6 @@
 # Written by Thomas Esser.  Public domain.
 # Execute texi2dvi --pdf.
 
-test -f /bin/ksh && test -z "$RUNNING_KSH" \
-  && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
-  && { RUNNING_KSH=true; export RUNNING_KSH; exec /bin/ksh $0 ${1+"$@"}; }
-unset RUNNING_KSH
-
-test -f /bin/bsh && test -z "$RUNNING_BSH" \
-  && { UNAMES=`uname -s`; test "x$UNAMES" = xAIX; } 2>/dev/null \
-  && { RUNNING_BSH=true; export RUNNING_BSH; exec /bin/bsh $0 ${1+"$@"}; }
-unset RUNNING_BSH
-
 # hack around a bug in zsh:
 test -n "${ZSH_VERSION+set}" && alias -g '${1+"$@"}'='"$@"'
 
--- texinfo/util/texi2dvi
+++ texinfo/util/texi2dvi
@@ -22,11 +22,6 @@
 # If possible, please send a copy of the output of the script called with
 # the `--debug' option when making a bug report.
 
-test -f /bin/ksh && test -z "$RUNNING_KSH" \
-  && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
-  && { RUNNING_KSH=true; export RUNNING_KSH; exec /bin/ksh $0 ${1+"$@"}; }
-unset RUNNING_KSH
-
 # No failure shall remain unpunished.
 set -e