Remove ancient ath9k workaround

It's been years. Let's see if we actually still need this.

Signed-off-by: Laura Abbott <labbott@redhat.com>

ath9k-rx-dma-stop-check.patch

@@ -1,38 +0,0 @@
-From: "kernel-team@fedoraproject.org" <kernel-team@fedoraproject.org>
-Date: Wed, 6 Feb 2013 09:57:47 -0500
-Subject: [PATCH] ath9k: rx dma stop check
-
----
- drivers/net/wireless/ath/ath9k/mac.c | 12 +++++++++++-
- 1 file changed, 11 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
-index bba85d1a6cd1..ebbee8f17130 100644
---- a/drivers/net/wireless/ath/ath9k/mac.c
-+++ b/drivers/net/wireless/ath/ath9k/mac.c
-@@ -693,7 +693,7 @@ bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset)
- {
- #define AH_RX_STOP_DMA_TIMEOUT 10000   /* usec */
- 	struct ath_common *common = ath9k_hw_common(ah);
--	u32 mac_status, last_mac_status = 0;
-+	u32 mac_status = 0, last_mac_status = 0;
- 	int i;
- 
- 	/* Enable access to the DMA observation bus */
-@@ -723,6 +723,16 @@ bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset)
- 	}
- 
- 	if (i == 0) {
-+		if (!AR_SREV_9300_20_OR_LATER(ah) &&
-+		    (mac_status & 0x700) == 0) {
-+			/*
-+			 * DMA is idle but the MAC is still stuck
-+			 * processing events
-+			 */
-+			*reset = true;
-+			return true;
-+		}
-+
- 		ath_err(common,
- 			"DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x DMADBG_7=0x%08x\n",
- 			AH_RX_STOP_DMA_TIMEOUT / 1000,

kernel.spec

@@ -507,8 +507,6 @@ Patch116: crash-driver.patch
 
 Patch117: lis3-improve-handling-of-null-rate.patch
 
-Patch120: ath9k-rx-dma-stop-check.patch
-
 Patch122: Input-synaptics-pin-3-touches-when-the-firmware-repo.patch
 
 # This no longer applies, let's see if it needs to be updated