Remove some dead code from nxt_term_parse()

This is the completion of the commits cleaning up nxt_term_parse().

In nxt_term_parse() we have a switch statement with a case label to
handle having a space (' '). AFAICT and have traced this code will never
trigger.

Remove it.

The src/test/nxt_term_parse_test.c still passes

  tests: [notice] term parse test passed

Signed-off-by: Andrew Clayton <[email protected]>

src/nxt_time_parse.c

@@ -442,15 +442,6 @@ nxt_term_parse(const u_char *p, size_t len, nxt_bool_t seconds)
             scale = 1;
             break;
 
-        case ' ':
-            if (step >= st_sec) {
-                return -1;
-            }
-            step = st_last;
-            max = NXT_INT32_T_MAX;
-            scale = 1;
-            break;
-
         default:
             return -1;
         }