Fix minor formatting nits and remove unnecessary comment.

Modules/_collectionsmodule.c

@@ -64,7 +64,7 @@ typedef struct {
     Py_ssize_t rightindex;      /* in range(BLOCKLEN) */
     size_t state;               /* incremented whenever the indices move */
     Py_ssize_t maxlen;
-    PyObject *weakreflist; /* List of weak references */
+    PyObject *weakreflist;
 } dequeobject;
 
 static PyTypeObject deque_type;
@@ -1274,7 +1274,6 @@ static PySequenceMethods deque_as_sequence = {
     (objobjproc)deque_contains,         /* sq_contains */
     (binaryfunc)deque_inplace_concat,   /* sq_inplace_concat */
     0,                                  /* sq_inplace_repeat */
-
 };
 
 /* deque object ********************************************************/