Remove unused include

We should not be including server headers from client code. It was
not even needed, so simply remove it.
diff --git a/common/rfb/CSecurityTLS.cxx b/common/rfb/CSecurityTLS.cxx
index 000331c..72d148e 100644
--- a/common/rfb/CSecurityTLS.cxx
+++ b/common/rfb/CSecurityTLS.cxx
@@ -34,7 +34,6 @@
 #endif
 
 #include <rfb/CSecurityTLS.h>
-#include <rfb/SSecurityVeNCrypt.h> 
 #include <rfb/CConnection.h>
 #include <rfb/LogWriter.h>
 #include <rfb/Exception.h>
diff --git a/common/rfb/CSecurityTLS.h b/common/rfb/CSecurityTLS.h
index 4932c07..476d0ef 100644
--- a/common/rfb/CSecurityTLS.h
+++ b/common/rfb/CSecurityTLS.h
@@ -31,7 +31,6 @@
 #endif
 
 #include <rfb/CSecurity.h>
-#include <rfb/SSecurityVeNCrypt.h>
 #include <rfb/Security.h>
 #include <rfb/UserMsgBox.h>
 #include <rdr/InStream.h>