[PATCH tor v1 1/6] channel: Fix clang-15 complaint (unused variable)

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

Commit faa752f3c9bd3faa ("Adjust the rules for warning about too many
connections") added an unused variable @total_dirauth_connections.
It results in the following clang-15 complaint:

```
  src/core/or/channel.c:752:7: error: variable 'total_dirauth_connections' set but not used [-Werror,-Wunused-but-set-variable]
    int total_dirauth_connections = 0, total_dirauths = 0;
        ^
  1 error generated.
```

Fix it by removing the variable.

Cc: Nick Mathewson <nickm@torproject.org>
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
 src/core/or/channel.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/core/or/channel.c b/src/core/or/channel.c
index c46fa93e58..84f0d7d852 100644
--- a/src/core/or/channel.c
+++ b/src/core/or/channel.c
@@ -749,7 +749,7 @@ channel_check_for_duplicates(void)
 {
   channel_idmap_entry_t **iter;
   channel_t *chan;
-  int total_dirauth_connections = 0, total_dirauths = 0;
+  int total_dirauths = 0;
   int total_relay_connections = 0, total_relays = 0, total_canonical = 0;
   int total_half_canonical = 0;
   int total_gt_one_connection = 0, total_gt_two_connections = 0;
@@ -777,8 +777,6 @@ channel_check_for_duplicates(void)
 
       connections_to_relay++;
       total_relay_connections++;
-      if (is_dirauth)
-        total_dirauth_connections++;
 
       if (chan->is_canonical(chan)) total_canonical++;
 
-- 
Ammar Faizi