run-command.c: remove run_command_v_opt_cd()

This function is not used anywhere.

Johannes Sixt <johannes.sixt@telecom.at>:
> Future callers can use run_command_v_opt_cd_env() instead.
Signed-off-by: NNanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

Documentation/technical/api-run-command.txt

@@ -30,7 +30,7 @@ Functions
 	start_command() followed by finish_command(). Takes a pointer
 	to a `struct child_process` that specifies the details.
 
-`run_command_v_opt`, `run_command_v_opt_cd`, `run_command_v_opt_cd_env`::
+`run_command_v_opt`, `run_command_v_opt_cd_env`::
 
 	Convenience functions that encapsulate a sequence of
 	start_command() followed by finish_command(). The argument argv

run-command.c

@@ -273,14 +273,6 @@ int run_command_v_opt(const char **argv, int opt)
 	return run_command(&cmd);
 }
 
-int run_command_v_opt_cd(const char **argv, int opt, const char *dir)
-{
-	struct child_process cmd;
-	prepare_run_command_v_opt(&cmd, argv, opt);
-	cmd.dir = dir;
-	return run_command(&cmd);
-}
-
 int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env)
 {
 	struct child_process cmd;

run-command.h

@@ -53,7 +53,6 @@ int run_command(struct child_process *);
 #define RUN_GIT_CMD	     2	/*If this is to be git sub-command */
 #define RUN_COMMAND_STDOUT_TO_STDERR 4
 int run_command_v_opt(const char **argv, int opt);
-int run_command_v_opt_cd(const char **argv, int opt, const char *dir);
 
 /*
  * env (the environment) is to be formatted like environ: "VAR=VALUE".