Tautological "this flag is forced to 0" comments

Remove two tautological "this flag is forced to 0" comments. These
comments were added in the following CLs:
https://aomedia-review.googlesource.com/c/aom/+/76623
https://aomedia-review.googlesource.com/c/aom/+/51991

They seem to be copy-and-paste errors.

Change-Id: I72bbf9efb8b98735f59316288bdfd12dc96427e3
diff --git a/aom/aomcx.h b/aom/aomcx.h
index 1941f90..33f4636 100644
--- a/aom/aomcx.h
+++ b/aom/aomcx.h
@@ -1008,9 +1008,6 @@
   /*!\brief Codec control function to turn on / off filter intra usage at
    * sequence level, int parameter
    *
-   * \attention If AV1E_SET_ENABLE_FILTER_INTRA is 0, then this flag is
-   * forced to 0.
-   *
    * - 0 = disable
    * - 1 = enable (default)
    */
@@ -1048,8 +1045,6 @@
   /*!\brief Codec control function to turn on / off frame superresolution, int
    * parameter
    *
-   * \attention If AV1E_SET_ENABLE_SUPERRES is 0, then this flag is forced to 0.
-   *
    * - 0 = disable
    * - 1 = enable (default)
    */