Remove unused kTokenDelimeter variable

This breaks the build on Brillo side

Change-Id: Ifb7ffa5f8d79d8bc67a3a7ce43e254276aaa519e
Reviewed-on: https://weave-review.googlesource.com/1963
Reviewed-by: Alex Vakulenko <avakulenko@google.com>

src/privet/security_manager.cc

diff --git a/src/privet/security_manager.cc b/src/privet/security_manager.cc
index cb0d73d..5fa41be 100644
--- a/src/privet/security_manager.cc
+++ b/src/privet/security_manager.cc
@@ -31,7 +31,6 @@
 
 namespace {
 
-const char kTokenDelimeter[] = ":";
 const int kSessionExpirationTimeMinutes = 5;
 const int kPairingExpirationTimeMinutes = 5;
 const int kMaxAllowedPairingAttemts = 3;