Remove support for static ECDH cipher suites

Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/library/ssl_ciphersuites_internal.h b/library/ssl_ciphersuites_internal.h
index d1db2db..54199db 100644
--- a/library/ssl_ciphersuites_internal.h
+++ b/library/ssl_ciphersuites_internal.h
@@ -45,8 +45,6 @@
 static inline int mbedtls_ssl_ciphersuite_no_pfs(const mbedtls_ssl_ciphersuite_t *info)
 {
     switch (info->MBEDTLS_PRIVATE(key_exchange)) {
-        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
-        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
         case MBEDTLS_KEY_EXCHANGE_PSK:
             return 1;
 
@@ -60,9 +58,7 @@
 static inline int mbedtls_ssl_ciphersuite_uses_ecdh(const mbedtls_ssl_ciphersuite_t *info)
 {
     switch (info->MBEDTLS_PRIVATE(key_exchange)) {
-        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
-        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
-            return 1;
+    return 1;
 
         default:
             return 0;
@@ -73,9 +69,7 @@
 static inline int mbedtls_ssl_ciphersuite_cert_req_allowed(const mbedtls_ssl_ciphersuite_t *info)
 {
     switch (info->MBEDTLS_PRIVATE(key_exchange)) {
-        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
         case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
-        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
         case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
             return 1;
 
@@ -87,9 +81,7 @@
 static inline int mbedtls_ssl_ciphersuite_uses_srv_cert(const mbedtls_ssl_ciphersuite_t *info)
 {
     switch (info->MBEDTLS_PRIVATE(key_exchange)) {
-        case MBEDTLS_KEY_EXCHANGE_ECDH_RSA:
         case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
-        case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA:
         case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
             return 1;