Fix compilation on Windows

src/core/iomgr/pollset_set_windows.c

@@ -42,6 +42,9 @@ void grpc_pollset_set_init(grpc_pollset_set *pollset_set) {}
 void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set) {}
 
 void grpc_pollset_set_add_pollset(grpc_pollset_set *pollset_set,
-                                  grpc_pollset *pollset) {}
+	grpc_pollset *pollset) {}
+
+void grpc_pollset_set_del_pollset(grpc_pollset_set *pollset_set,
+	grpc_pollset *pollset) {}
 
 #endif /* GPR_WINSOCK_SOCKET */

src/core/iomgr/pollset_windows.h

@@ -37,7 +37,6 @@
 #include <windows.h>
 #include <grpc/support/sync.h>
 
-#include "src/core/iomgr/pollset_kick.h"
 #include "src/core/iomgr/socket_windows.h"
 
 /* There isn't really any such thing as a pollset under Windows, due to the