Drop compatibility patch for mimalloc < 2.0.6 on epel8

Now that mimalloc 2.0.6 is available there, it is no longer needed.

0002-Fix-compatibility-with-libstdc-9.patch

@@ -1,40 +0,0 @@
-From d068fb0caae8c8db97ee59ba400929f5f97f8be1 Mon Sep 17 00:00:00 2001
-Message-Id: <d068fb0caae8c8db97ee59ba400929f5f97f8be1.1650123861.git.github@sicherha.de>
-From: Christoph Erhardt <github@sicherha.de>
-Date: Tue, 22 Feb 2022 21:21:18 +0100
-Subject: [PATCH] Fix compatibility with libstdc++ < 9
-
-mimalloc does not override the `nothrow` variants of the `delete`
-operator because it assumes that their implementation in libstdc++
-redirects to the default `delete` operators. This is not the case for
-libstdc++ < 9, where `std::free()` is called directly.
-
-Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68210
-
-This patch ensures that the `nothrow` `delete` operators are overridden
-as well.
----
- main.cc | 7 +++++++
- 1 file changed, 7 insertions(+)
-
-diff --git a/main.cc b/main.cc
-index b390b0f7..5c1f5450 100644
---- a/main.cc
-+++ b/main.cc
-@@ -6,6 +6,13 @@
- 
- #ifdef USE_SYSTEM_MIMALLOC
- #include <mimalloc-new-delete.h>
-+
-+// Additionally override the nothrow delete operators for compatibility with
-+// buggy libstdc++ < 9
-+#if MI_MALLOC_VERSION < 206
-+void operator delete(void* p, const std::nothrow_t&) noexcept   { mi_free(p); }
-+void operator delete[](void* p, const std::nothrow_t&) noexcept { mi_free(p); }
-+#endif
- #endif
- 
- namespace mold {
--- 
-2.35.1
-

mold.spec

@@ -17,10 +17,6 @@ Patch0:		tbb-strip-werror.patch
 # Skip test if dwarfdump is unavailable
 Patch1:		0001-Skip-test-if-dwarfdump-is-unavailable.patch
 
-# Fix mimalloc compatibility with libstdc++ < 9:
-# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68210
-Patch2:		0002-Fix-compatibility-with-libstdc-9.patch
-
 # mold can produce native binaries for i686, x86_64, ARMv7, aarch64 and riscv64,
 # but it only runs on a 64-bit host
 ExclusiveArch:	x86_64 aarch64 riscv64