Bug 1755834 - Remove compiler-rt-13-no-codesign.patch. r=firefox-build-system-reviewers,andi

Now that mac compiler-rts are built with build-compiler-rt.sh, which has
its own hack around codesign (which was broken in bug 1755415, so fix that),
we don't need this patch anymore.

Differential Revision: https://phabricator.services.mozilla.com/D138985

build/build-clang/clang-13.json

@@ -9,7 +9,6 @@
       "bug47258-extract-symbols-mbcs.patch",
       "Remove-FlushViewOfFile-when-unmaping-gcda-files.patch",
       "fuzzing_ccov_build_clang_12.patch",
-      "compiler-rt-13-no-codesign.patch",
       "win64-no-symlink.patch",
       "revert-llvmorg-13-init-8182-gc2297544c047.patch",
       "revert-llvmorg-12-init-7827-g2a078c307204.patch",

build/build-clang/clang-trunk.json

@@ -8,7 +8,6 @@
     "downgrade-mangling-error_clang_12.patch",
     "bug47258-extract-symbols-mbcs.patch",
     "Remove-FlushViewOfFile-when-unmaping-gcda-files.patch",
-    "fuzzing_ccov_build_clang_12.patch",
-    "compiler-rt-13-no-codesign.patch"
+    "fuzzing_ccov_build_clang_12.patch"
   ]
 }

build/build-clang/compiler-rt-13-no-codesign.patch

@@ -1,19 +0,0 @@
-diff --git a/compiler-rt/cmake/Modules/AddCompilerRT.cmake b/compiler-rt/cmake/Modules/AddCompilerRT.cmake
-index bc69ec95c419..9f100fdcec2f 100644
---- a/compiler-rt/cmake/Modules/AddCompilerRT.cmake
-+++ b/compiler-rt/cmake/Modules/AddCompilerRT.cmake
-@@ -366,14 +366,6 @@ function(add_compiler_rt_runtime name type)
-         set_target_properties(${libname} PROPERTIES IMPORT_PREFIX "")
-         set_target_properties(${libname} PROPERTIES IMPORT_SUFFIX ".lib")
-       endif()
--      if(APPLE)
--        # Ad-hoc sign the dylibs
--        add_custom_command(TARGET ${libname}
--          POST_BUILD  
--          COMMAND codesign --sign - $<TARGET_FILE:${libname}>
--          WORKING_DIRECTORY ${COMPILER_RT_OUTPUT_LIBRARY_DIR}
--        )
--      endif()
-     endif()
- 
-     set(parent_target_arg)

taskcluster/scripts/misc/build-compiler-rt.sh

@@ -70,6 +70,7 @@ case "$target" in
   # Give it a fake one.
   echo "#!/bin/sh" > codesign
   chmod +x codesign
+  PATH="$PATH:$PWD"
   ;;
 *-linux-android)
   cflags="