remove some HTTP_CODE_UNASSIGNED

Author: Links2004

libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.h

@@ -87,12 +87,9 @@ typedef enum {
     HTTP_CODE_UNPROCESSABLE_ENTITY = 422,
     HTTP_CODE_LOCKED = 423,
     HTTP_CODE_FAILED_DEPENDENCY = 424,
-    HTTP_CODE_UNASSIGNED = 425,
     HTTP_CODE_UPGRADE_REQUIRED = 426,
-    HTTP_CODE_UNASSIGNED = 427,
     HTTP_CODE_PRECONDITION_REQUIRED = 428,
     HTTP_CODE_TOO_MANY_REQUESTS = 429,
-    HTTP_CODE_UNASSIGNED = 430,
     HTTP_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE = 431,
     HTTP_CODE_INTERNAL_SERVER_ERROR = 500,
     HTTP_CODE_NOT_IMPLEMENTED = 501,
@@ -103,7 +100,6 @@ typedef enum {
     HTTP_CODE_VARIANT_ALSO_NEGOTIATES = 506,
     HTTP_CODE_INSUFFICIENT_STORAGE = 507,
     HTTP_CODE_LOOP_DETECTED = 508,
-    HTTP_CODE_UNASSIGNED = 509,
     HTTP_CODE_NOT_EXTENDED = 510,
     HTTP_CODE_NETWORK_AUTHENTICATION_REQUIRED = 511
 } t_http_codes;