Remove dead code.

That block is slightly unreachable.

Change-Id: I1b4b2d8b1cd4bb7137ce0aac4b65079545cd9264
Reviewed-on: https://boringssl-review.googlesource.com/4286
Reviewed-by: Adam Langley <agl@google.com>

ssl/ssl_ciph.c

diff --git a/ssl/ssl_ciph.c b/ssl/ssl_ciph.c
index 252a9a4..7a5c8be 100644
--- a/ssl/ssl_ciph.c
+++ b/ssl/ssl_ciph.c
@@ -677,12 +677,6 @@
 
     if (in_group) {
       if (ch == ']') {
-        if (!in_group) {
-          OPENSSL_PUT_ERROR(SSL, ssl_cipher_process_rulestr,
-                            SSL_R_UNEXPECTED_GROUP_CLOSE);
-          retval = in_group = 0;
-          break;
-        }
         if (*tail_p) {
           (*tail_p)->in_group = 0;
         }