[PATCH] Update documentation for Ada .gdb_index

[Tom Tromey]

.gdb_index now supports Ada, so update the documentation to reflect
this.

gdb/doc/ChangeLog
2020-06-11  Tom Tromey  <tromey@adacore.com>

	* gdb.texinfo (Index Files): Reword.  Remove Ada limitation.
---
 gdb/doc/ChangeLog   | 4 ++++
 gdb/doc/gdb.texinfo | 4 +---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index d90c33d67ae..59e3e75d18a 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -21286,9 +21286,7 @@ Instead you must do, for example,
 $ gdb -iex "set use-deprecated-index-sections on" <program>
 @end smallexample
 
-There are currently some limitation on indices.  They only work when
-using DWARF debugging information, not stabs.  And, only the
-@code{-dwarf-5} index works for programs using Ada.
+Indices only work when using DWARF debugging information, not stabs.
 
 @subsection Automatic symbol index cache
 
-- 
2.21.3