Revert "util: Add "/bin" to PATH when spawning helpers"

This reverts commit 66ab5e1a.

After Andrey's fixes that create mount points before dropping
old mounts and going to pivot_root, this patch is not needed.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

util.c

@@ -481,47 +481,6 @@ int run_scripts(char *action)
 		ret__;						\
 	})
 
-static int fixup_env(void)
-{
-	char *ep, *nep;
-	int len;
-
-	/*
-	 * FIXME
-	 *
-	 * We sometimes call other tools inside namespace
-	 * we restore. Host system may not have PATH properly
-	 * reflecting where the tools are in other namespaces.
-	 *
-	 * E.g. when restoring Centos6 container from FC20
-	 * host we fail to find /bin/tar, as in FC20 /bin is
-	 * not in PATH.
-	 *
-	 * It's not cool at all, things we think we call might
-	 * not coincide with what is really called. Proper fix
-	 * will come a bit later.
-	 */
-
-	ep = getenv("PATH");
-	if (!ep)
-		return 0;
-
-	len = strlen(ep);
-	nep = xmalloc(len + sizeof("/bin:"));
-	if (!nep)
-		return -1;
-
-	sprintf(nep, "/bin:%s", ep);
-	if (setenv("PATH", nep, 1)) {
-		pr_perror("Failed to override PATH");
-		xfree(nep);
-		return -1;
-	}
-
-	xfree(nep);
-	return 0;
-}
-
 /*
  * If "in" is negative, stdin will be closed.
  * If "out" or "err" are negative, a log file descriptor will be used.
@@ -544,9 +503,6 @@ int cr_system(int in, int out, int err, char *cmd, char *const argv[])
 		pr_perror("fork() failed");
 		goto out;
 	} else if (pid == 0) {
-		if (fixup_env())
-			goto out_chld;
-
 		if (out < 0)
 			out = log_get_fd();
 		if (err < 0)