submodule-config: remove support for overlaying repository config

All callers have been migrated to explicitly read any configuration they
need.  The support for handling it automatically in submodule-config is
no longer needed.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

submodule-config.h

@@ -34,7 +34,6 @@ extern int option_fetch_parse_recurse_submodules(const struct option *opt,
 						 const char *arg, int unset);
 extern int parse_update_recurse_submodules_arg(const char *opt, const char *arg);
 extern int parse_push_recurse_submodules_arg(const char *opt, const char *arg);
-extern int parse_submodule_config_option(const char *var, const char *value);
 extern int submodule_config_option(struct repository *repo,
 				   const char *var, const char *value);
 extern const struct submodule *submodule_from_name(

t/helper/test-submodule-config.c

@@ -10,11 +10,6 @@ static void die_usage(int argc, const char **argv, const char *msg)
 	exit(1);
 }
 
-static int git_test_config(const char *var, const char *value, void *cb)
-{
-	return parse_submodule_config_option(var, value);
-}
-
 int cmd_main(int argc, const char **argv)
 {
 	const char **arg = argv;
@@ -38,7 +33,6 @@ int cmd_main(int argc, const char **argv)
 
 	setup_git_directory();
 	gitmodules_config();
-	git_config(git_test_config, NULL);
 
 	while (*arg) {
 		struct object_id commit_oid;

t/t7411-submodule-config.sh

@@ -122,78 +122,6 @@ test_expect_success 'using different treeishs works' '
 	)
 '
 
-cat >super/expect_url <<EOF
-Submodule url: 'git@somewhere.else.net:a.git' for path 'b'
-Submodule url: 'git@somewhere.else.net:submodule.git' for path 'submodule'
-EOF
-
-cat >super/expect_local_path <<EOF
-Submodule name: 'a' for path 'c'
-Submodule name: 'submodule' for path 'submodule'
-EOF
-
-test_expect_success 'reading of local configuration' '
-	(cd super &&
-		old_a=$(git config submodule.a.url) &&
-		old_submodule=$(git config submodule.submodule.url) &&
-		git config submodule.a.url git@somewhere.else.net:a.git &&
-		git config submodule.submodule.url git@somewhere.else.net:submodule.git &&
-		test-submodule-config --url \
-			"" b \
-			"" submodule \
-				>actual &&
-		test_cmp expect_url actual &&
-		git config submodule.a.path c &&
-		test-submodule-config \
-			"" c \
-			"" submodule \
-				>actual &&
-		test_cmp expect_local_path actual &&
-		git config submodule.a.url "$old_a" &&
-		git config submodule.submodule.url "$old_submodule" &&
-		git config --unset submodule.a.path c
-	)
-'
-
-cat >super/expect_url <<EOF
-Submodule url: '../submodule' for path 'b'
-Submodule url: 'git@somewhere.else.net:submodule.git' for path 'submodule'
-EOF
-
-test_expect_success 'reading of local configuration for uninitialized submodules' '
-	(
-		cd super &&
-		git submodule deinit -f b &&
-		old_submodule=$(git config submodule.submodule.url) &&
-		git config submodule.submodule.url git@somewhere.else.net:submodule.git &&
-		test-submodule-config --url \
-			"" b \
-			"" submodule \
-				>actual &&
-		test_cmp expect_url actual &&
-		git config submodule.submodule.url "$old_submodule" &&
-		git submodule init b
-	)
-'
-
-cat >super/expect_fetchrecurse_die.err <<EOF
-fatal: bad submodule.submodule.fetchrecursesubmodules argument: blabla
-EOF
-
-test_expect_success 'local error in fetchrecursesubmodule dies early' '
-	(cd super &&
-		git config submodule.submodule.fetchrecursesubmodules blabla &&
-		test_must_fail test-submodule-config \
-			"" b \
-			"" submodule \
-				>actual.out 2>actual.err &&
-		touch expect_fetchrecurse_die.out &&
-		test_cmp expect_fetchrecurse_die.out actual.out  &&
-		test_cmp expect_fetchrecurse_die.err actual.err  &&
-		git config --unset submodule.submodule.fetchrecursesubmodules
-	)
-'
-
 test_expect_success 'error in history in fetchrecursesubmodule lets continue' '
 	(cd super &&
 		git config -f .gitmodules \