git-submodule.sh: remove unused $prefix variable

Remove the $prefix variable which isn't used anymore, and hasn't been
since b3c5f5cb048 (submodule: move core cmd_update() logic to C,
2022-03-15).

Before that we'd use it to invoke "git submodule--helper" with the
"--recursive-prefix" option, but since b3c5f5cb048 that "git
submodule--helper" option is only used when it invokes itself.

So the "--recursive-prefix" option is still in use, but at this point
only when the helper invokes itself during submodule recursion. See
the "--recursive-prefix" option added in
c51f8f94e5b (submodule--helper: run update procedures from C,
2021-08-24).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-submodule.sh b/git-submodule.sh
index bc436c4ca473f913257608dff81f3254450a1be1..53847bbf6e236d8251da5a5288bf7d627978dd89 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -41,7 +41,6 @@ files=
 remote=
 nofetch=
 update=
-prefix=
 custom_name=
 depth=
 progress=
@@ -127,7 +126,7 @@ cmd_add()
                usage
        fi
 
-       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper add ${GIT_QUIET:+--quiet} ${force:+--force} ${progress:+"--progress"} ${branch:+--branch "$branch"} ${reference_path:+--reference "$reference_path"} ${dissociate:+--dissociate} ${custom_name:+--name "$custom_name"} ${depth:+"$depth"} -- "$@"
+       git ${wt_prefix:+-C "$wt_prefix"} submodule--helper add ${GIT_QUIET:+--quiet} ${force:+--force} ${progress:+"--progress"} ${branch:+--branch "$branch"} ${reference_path:+--reference "$reference_path"} ${dissociate:+--dissociate} ${custom_name:+--name "$custom_name"} ${depth:+"$depth"} -- "$@"
 }
 
 #
@@ -189,7 +188,7 @@ cmd_init()
                shift
        done
 
-       git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
+       git ${wt_prefix:+-C "$wt_prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
 }
 
 #
@@ -346,7 +345,6 @@ cmd_update()
                ${init:+--init} \
                ${nofetch:+--no-fetch} \
                ${wt_prefix:+--prefix "$wt_prefix"} \
-               ${prefix:+--recursive-prefix "$prefix"} \
                ${update:+--update "$update"} \
                ${reference:+"$reference"} \
                ${dissociate:+"--dissociate"} \