edit-util: do not try to recreate temp file if missing

We initially read from temp file, then strip it, and write
back to it. If the file suddenly disappeared during the process,
it indicates someone else is touching our temp file
behind our back. Let's not silently continue.

src/shared/edit-util.c

@@ -356,7 +356,7 @@ static int strip_edit_temp_file(EditFile *e) {
                 return 1; /* Contents have real changes */
 
         r = write_string_file(e->temp, new_contents,
-                              WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_TRUNCATE | WRITE_STRING_FILE_AVOID_NEWLINE);
+                              WRITE_STRING_FILE_TRUNCATE | WRITE_STRING_FILE_AVOID_NEWLINE);
         if (r < 0)
                 return log_error_errno(r, "Failed to strip temporary file '%s': %m", e->temp);