Remove some obsolete/obscure internal define switches:

- FLAT_INC
- PKCS1_CHECK (the SSL_OP_PKCS1_CHECK options have been
  no-oped)
- PKCS_TESTVECT (debugging leftovers)
- SSL_AD_MISSING_SRP_USERNAME (unfinished feature)
- DTLS_AD_MISSING_HANDSHAKE_MESSAGE (unfinished feature)
- USE_OBJ_MAC (note this removes a define from the public header but
   very unlikely someone would be depending on it)
- SSL_FORBID_ENULL

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
diff --git a/test/ectest.c b/test/ectest.c
index 0dd0ab8..bb2a08d 100644
--- a/test/ectest.c
+++ b/test/ectest.c
@@ -23,14 +23,11 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#ifdef FLAT_INC
-# include "e_os.h"
-#else
-# include "../e_os.h"
-#endif
 #include <string.h>
 #include <time.h>
 
+#include "e_os.h"
+
 #ifdef OPENSSL_NO_EC
 int main(int argc, char *argv[])
 {