Revert "ampere iter2: HEVC EXT_SPS_ST_RPS / _LT_RPS dynamic-array submission (VDPU381)"

This reverts commit f61f736380.

src/request.h

@@ -144,20 +144,6 @@ struct request_data {
 	 * Reset to false at DestroyContext.
 	 */
 	bool is_10bit;
-
-	/*
-	 * iter2 (ampere-fourier): rkvdec on this host exposes the
-	 * V4L2_CID_STATELESS_HEVC_EXT_SPS_ST_RPS dynamic-array control
-	 * (VDPU381/383 path). When true, h265_set_controls appends
-	 * EXT_SPS_ST_RPS + EXT_SPS_LT_RPS (zero-initialized arrays sized
-	 * by VAAPI's count fields, capped at H.265 spec maxima 64/32).
-	 * Required to prevent rkvdec_hevc_prepare_hw_st_rps out-of-bounds
-	 * kernel OOPS when num_short_term_ref_pic_sets > 1.
-	 * Probed at first HEVC CreateContext via VIDIOC_QUERY_EXT_CTRL.
-	 * Persists for driver lifetime (gated solely by HEVC-only code
-	 * path, so cross-codec leakage cannot occur).
-	 */
-	bool has_ext_sps_rps;
 };
 
 VAStatus VA_DRIVER_INIT_FUNC(VADriverContextP context);