linuxPackages.broadcom_sta: remove i686-build-failure.patch since it was applied upstream

pkgs/os-specific/linux/broadcom-sta/default.nix

@@ -24,7 +24,6 @@ stdenv.mkDerivation {
   nativeBuildInputs = kernel.moduleBuildDependencies;
 
   patches = [
-    ./i686-build-failure.patch
     ./license.patch
     ./linux-4.7.patch
     # source: https://git.archlinux.org/svntogit/community.git/tree/trunk/004-linux48.patch?h=packages/broadcom-wl-dkms

pkgs/os-specific/linux/broadcom-sta/i686-build-failure.patch

@@ -1,18 +0,0 @@
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=fe47ae6e1a5005b2e82f7eab57b5c3820453293a
-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=4ea1636b04dbd66536fa387bae2eea463efc705b
-
-diff -ru a/src/shared/linux_osl.c b/src/shared/linux_osl.c
---- a/src/shared/linux_osl.c	2015-09-19 01:47:15.000000000 +0300
-+++ b/src/shared/linux_osl.c	2015-11-21 15:20:30.585902518 +0200
-@@ -932,7 +932,11 @@
- 	uint cycles;
- 
- #if defined(__i386__)
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0)
-+	cycles = (u32)rdtsc();
-+#else
- 	rdtscl(cycles);
-+#endif
- #else
- 	cycles = 0;
- #endif