replace and remove run_command_v_opt_cd_env_tr2()

The convenience function run_command_v_opt_cd_env_tr2() has no external
callers left.  Inline it and remove it from the API.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Taylor Blau <me@ttaylorr.com>

run-command.c

diff --git a/run-command.c b/run-command.c
index 32fa4b0..923bad3 100644
--- a/run-command.c
+++ b/run-command.c
@@ -1006,12 +1006,6 @@ int run_command(struct child_process *cmd)
 
 int run_command_v_opt(const char **argv, int opt)
 {
-	return run_command_v_opt_cd_env_tr2(argv, opt, NULL, NULL, NULL);
-}
-
-int run_command_v_opt_cd_env_tr2(const char **argv, int opt, const char *dir,
-				 const char *const *env, const char *tr2_class)
-{
 	struct child_process cmd = CHILD_PROCESS_INIT;
 	strvec_pushv(&cmd.args, argv);
 	cmd.no_stdin = opt & RUN_COMMAND_NO_STDIN ? 1 : 0;
@@ -1022,10 +1016,6 @@ int run_command_v_opt_cd_env_tr2(const char **argv, int opt, const char *dir,
 	cmd.clean_on_exit = opt & RUN_CLEAN_ON_EXIT ? 1 : 0;
 	cmd.wait_after_clean = opt & RUN_WAIT_AFTER_CLEAN ? 1 : 0;
 	cmd.close_object_store = opt & RUN_CLOSE_OBJECT_STORE ? 1 : 0;
-	cmd.dir = dir;
-	if (env)
-		strvec_pushv(&cmd.env, (const char **)env);
-	cmd.trace2_child_class = tr2_class;
 	return run_command(&cmd);
 }
 

run-command.h

diff --git a/run-command.h b/run-command.h
index 1bfa185..63ed6e1 100644
--- a/run-command.h
+++ b/run-command.h
@@ -233,23 +233,15 @@ int run_auto_maintenance(int quiet);
 #define RUN_CLOSE_OBJECT_STORE		(1<<7)
 
 /**
- * Convenience functions that encapsulate a sequence of
+ * Convenience function that encapsulates a sequence of
  * start_command() followed by finish_command(). The argument argv
  * specifies the program and its arguments. The argument opt is zero
  * or more of the flags `RUN_COMMAND_NO_STDIN`, `RUN_GIT_CMD`,
  * `RUN_COMMAND_STDOUT_TO_STDERR`, or `RUN_SILENT_EXEC_FAILURE`
  * that correspond to the members .no_stdin, .git_cmd,
  * .stdout_to_stderr, .silent_exec_failure of `struct child_process`.
- * The argument dir corresponds the member .dir. The argument env
- * corresponds to the member .env.
  */
 int run_command_v_opt(const char **argv, int opt);
-/*
- * env (the environment) is to be formatted like environ: "VAR=VALUE".
- * To unset an environment variable use just "VAR".
- */
-int run_command_v_opt_cd_env_tr2(const char **argv, int opt, const char *dir,
-				 const char *const *env, const char *tr2_class);
 
 /**
  * Execute the given command, sending "in" to its stdin, and capturing its