Drop GetHostTriple export again

This doesn't work by itself due to the config.guess dependency,
and I'm not longer sure this is the right approach. The runtimes
build should really be getting this from the exported
LLVM_HOST_TRIPLE variable.

0001-Export-GetHostTriple.cmake.patch

@@ -1,25 +0,0 @@
-From 1d22ceca60fe0614f34252c4def041b05ca5d925 Mon Sep 17 00:00:00 2001
-From: Nikita Popov <npopov@redhat.com>
-Date: Tue, 27 Sep 2022 12:55:35 +0200
-Subject: [PATCH] Export GetHostTriple.cmake
-
-This is needed by the runtimes build.
----
- llvm/cmake/modules/CMakeLists.txt | 1 -
- 1 file changed, 1 deletion(-)
-
-diff --git a/llvm/cmake/modules/CMakeLists.txt b/llvm/cmake/modules/CMakeLists.txt
-index 428d8bff1cc6..0dd39b0db9a3 100644
---- a/llvm/cmake/modules/CMakeLists.txt
-+++ b/llvm/cmake/modules/CMakeLists.txt
-@@ -176,7 +176,6 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-     PATTERN LLVMConfigExtensions.cmake EXCLUDE
-     PATTERN LLVMConfigVersion.cmake EXCLUDE
-     PATTERN LLVM-Config.cmake EXCLUDE
--    PATTERN GetHostTriple.cmake EXCLUDE
-     PATTERN llvm-driver-template.cpp.in)
- 
-   if (NOT LLVM_ENABLE_IDE)
--- 
-2.37.3
-

llvm.spec

@@ -98,9 +98,6 @@ Patch2:		0003-XFAIL-missing-abstract-variable.ll-test-on-ppc64le.patch
 # TODO: Can be dropped for LLVM 16, see https://reviews.llvm.org/D131282.
 Patch3:		0001-Install-clang-tblgen.patch
 
-# Export GetHostTriple.cmake for use by the runtimes build.
-Patch4:		0001-Export-GetHostTriple.cmake.patch
-
 BuildRequires:	gcc
 BuildRequires:	gcc-c++
 BuildRequires:	clang