Remove no longer necessary patch

This patch has been integrated in the rc2 release.

46c947af7.patch

@@ -1,29 +0,0 @@
-From 46c947af7ead0a939fbd7a93c370e7ead2128d07 Mon Sep 17 00:00:00 2001
-From: serge-sans-paille <sguelton@redhat.com>
-Date: Wed, 18 Aug 2021 23:48:14 +0200
-Subject: [PATCH] Have lit preserve SOURCE_DATE_EPOCH
-
-This environment variable has been standardized for reproducible builds. Setting
-it can help to have reproducible tests too, so keep it as part of the testing
-env when set.
-
-See https://reproducible-builds.org/docs/source-date-epoch/
-
-Differential Revision: https://reviews.llvm.org/D108332
----
- llvm/utils/lit/lit/TestingConfig.py | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/llvm/utils/lit/lit/TestingConfig.py b/llvm/utils/lit/lit/TestingConfig.py
-index d534d895e4bae..37558bd5059c0 100644
---- a/llvm/utils/lit/lit/TestingConfig.py
-+++ b/llvm/utils/lit/lit/TestingConfig.py
-@@ -28,7 +28,7 @@ def fromdefaults(litConfig):
-                      'TMPDIR', 'TMP', 'TEMP', 'TEMPDIR', 'AVRLIT_BOARD',
-                      'AVRLIT_PORT', 'FILECHECK_OPTS', 'VCINSTALLDIR',
-                      'VCToolsinstallDir', 'VSINSTALLDIR', 'WindowsSdkDir',
--                     'WindowsSDKLibVersion']
-+                     'WindowsSDKLibVersion', 'SOURCE_DATE_EPOCH']
- 
-         if sys.platform == 'win32':
-             pass_vars.append('INCLUDE')

llvm.spec

@@ -86,7 +86,6 @@ Source4:	lit.fedora.cfg.py
 Patch0:		0001-cmake-Allow-shared-libraries-to-customize-the-soname.patch
 %endif
 Patch2:		0001-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
-Patch3:		46c947af7.patch
 
 BuildRequires:	gcc
 BuildRequires:	gcc-c++