[binutils-gdb] [gdb/tui] Remove local CTRL_CHAR definition

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7e0417f49792ea5865faa47735be638989fe5229

commit 7e0417f49792ea5865faa47735be638989fe5229
Author: Tom de Vries <[email protected]>
Date:   Tue Mar 24 16:38:32 2026 +0100

    [gdb/tui] Remove local CTRL_CHAR definition
    
    In gdb/tui/tui-io.c we have a local definition of CTRL_CHAR:
    ...
     /* Use definition from readline 4.3.  */
     #undef CTRL_CHAR
     #define CTRL_CHAR(c) \
          ((c) < control_character_threshold && (((c) & 0x80) == 0))
    ...
    
    We require readline >= 7.0, so we can expect the definition to be available.
    
    Remove the superfluous local definition.
    
    Tested on x86_64-linux.
    
    Approved-By: Tom Tromey <[email protected]>

Diff:
---
 gdb/tui/tui-io.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/gdb/tui/tui-io.c b/gdb/tui/tui-io.c
index a9a50446e8a..6b94fa2e8b0 100644
--- a/gdb/tui/tui-io.c
+++ b/gdb/tui/tui-io.c
@@ -64,11 +64,6 @@ key_is_start_sequence (int ch)
   return (ch == 27);
 }
 
-/* Use definition from readline 4.3.  */
-#undef CTRL_CHAR
-#define CTRL_CHAR(c) \
-     ((c) < control_character_threshold && (((c) & 0x80) == 0))
-
 /* This file controls the IO interactions between gdb and curses.
    When the TUI is enabled, gdb has two modes a curses and a standard
    mode.