gdb: remove internalvar_funcs::destroy

No kind of internal var uses it remove it.  This makes the transition to
using a variant easier, since we don't need to think about where this
should be called (in a destructor or not), if it can throw, etc.

Change-Id: Iebbc867d1ce6716480450d9790410d6684cbe4dd

1 files changed, 0 insertions, 1 deletions

diff --git a/gdb/break-catch-throw.c b/gdb/break-catch-throw.c
index d34e5f9..fcd644e 100644
--- a/gdb/break-catch-throw.c
+++ b/gdb/break-catch-throw.c
@@ -510,7 +510,6 @@ static const struct internalvar_funcs exception_funcs =
 {
   compute_exception,
   NULL,
-  NULL
 };