Eliminate async_annotation_suffix

The comments and existence of this global are a bit of misleading
obfuscation, since this is only ever used to print the prompt
annotation, and never changes.  Just hardcode "prompt" where
necessary, as done for most other annotations.

gdb/ChangeLog:
2016-03-09  Pedro Alves  <palves@redhat.com>

	* event-top.c (async_annotation_suffix): Delete.
	(top_level_prompt, command_line_handler): Don't use
	'async_annotation_suffix' and simplify.
	* event-top.h (async_annotation_suffix): Delete declaration.
	(init_main): Remove reference to 'async_annotation_suffix'.

1 files changed, 0 insertions, 4 deletions

diff --git a/gdb/top.c b/gdb/top.c
index b5ee4af33f..fb1657a006 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -1897,10 +1897,6 @@ init_main (void)
      the DEFAULT_PROMPT is.  */
   set_prompt (DEFAULT_PROMPT);
 
-  /* Set things up for annotation_level > 1, if the user ever decides
-     to use it.  */
-  async_annotation_suffix = "prompt";
-
   /* Set the important stuff up for command editing.  */
   command_editing_p = 1;
   history_expansion_p = 0;