ssl_cli: Fix all.sh test failure for ECJPAKE typo

When the "same ciphersuite validation" was backported to 2.1, we
introduced the use of irrelevant defines in ssl_cli.c. all.sh catches
these as "Likely typos". Remove the code for ECJPAKE, a feature that doesn't exist in 2.1, from ssl_cli to fix this test failure.

    ******************************************************************
    * test/build: declared and exported names
    * Thu Apr 26 08:23:19 UTC 2018
    ******************************************************************
    1175 macros
         143 enum-consts
    942 identifiers
    771 exported-symbols
    Exported symbols declared in header: PASS
    Names of actual-macros: PASS
    Names of enum-consts: PASS
    Names of identifiers: PASS
    Likely typos: FAIL
    MBEDTLS_KEY_EXCHANGE_ECJPAKE
    MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
    FAILED
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 483743d..2d1dcf8 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -666,12 +666,6 @@
         return( 1 );
 #endif
 
-#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( suite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE &&
-            mbedtls_ecjpake_check( &ssl->handshake->ecjpake_ctx ) != 0 )
-        return( 1 );
-#endif
-
     return( 0 );
 }