Remove effectively dead TERM_XTRA_* handling code

- We remove TERM_XTRA_ALIVE and the corresponding code because there's
  no code which actually invokes this hook.

- We remove TERM_XTRA_SHAPE since there's no actual handler code for
  this in any of the front ends -- therefore invoking these hooks can
  have no effect in the existing code.

1 files changed, 0 insertions, 4 deletions

diff --git a/src/main-gtk2.c b/src/main-gtk2.c
index 5be979be..5c67ca4d 100644
--- a/src/main-gtk2.c
+++ b/src/main-gtk2.c
@@ -480,10 +480,6 @@ static void Term_xtra_gtk(void *term_data_ctx, int n, int v)
 			return;
 		}
 
-		/* Handle change in the "level" */
-	case TERM_XTRA_LEVEL:
-		return;
-
 		/* Clear the screen */
 	case TERM_XTRA_CLEAR:
 		Term_clear_gtk(td);