Revert "Patch uv for win7 compatiblity"

This reverts commit 85b4e67.

libnode/patch/node.patch

@@ -19,44 +19,3 @@
      'src/js_native_api.h',
      'src/js_native_api_types.h',
      'src/node_api_types.h',
---- a/deps/uv/src/win/util.c
-+++ b/deps/uv/src/win/util.c
-@@ -1664,33 +1664,26 @@ int uv_os_unsetenv(const char* name) {
-
-
- int uv_os_gethostname(char* buffer, size_t* size) {
--  WCHAR buf[UV_MAXHOSTNAMESIZE];
-+  char buf[UV_MAXHOSTNAMESIZE];
-   size_t len;
--  char* utf8_str;
--  int convert_result;
-
-   if (buffer == NULL || size == NULL || *size == 0)
-     return UV_EINVAL;
-
-   uv__once_init(); /* Initialize winsock */
-
--  if (GetHostNameW(buf, UV_MAXHOSTNAMESIZE) != 0)
-+  if (gethostname(buf, sizeof(buf)) != 0)
-     return uv_translate_sys_error(WSAGetLastError());
-
--  convert_result = uv__convert_utf16_to_utf8(buf, -1, &utf8_str);
-+  buf[sizeof(buf) - 1] = '\0'; /* Null terminate, just to be safe. */
-+  len = strlen(buf);
-
--  if (convert_result != 0)
--    return convert_result;
--
--  len = strlen(utf8_str);
-   if (len >= *size) {
-     *size = len + 1;
--    uv__free(utf8_str);
-     return UV_ENOBUFS;
-   }
-
--  memcpy(buffer, utf8_str, len + 1);
--  uv__free(utf8_str);
-+  memcpy(buffer, buf, len + 1);
-   *size = len;
-   return 0;
- }