[llvm] Revert "[PGO] Add `llvm.loop.estimated_trip_count` metadata" (PR #151585)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-arm64-windows-msvc` running on `linaro-armv8-windows-msvc-04` while building `llvm` at step 3 "clean-build-dir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/161/builds/7324

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 3 (clean-build-dir) failure: Delete failed. (failure)
Step 5 (build-unified-tree) failure: build (failure)
...
1164.812 [1711/10/3626] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/TaskDispatch.cpp.obj
1164.826 [1710/10/3627] Linking CXX executable bin\lld.exe
1164.931 [1709/10/3628] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/ThreadSafeModule.cpp.obj
1165.034 [1708/10/3629] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/RedirectionManager.cpp.obj
1165.076 [1707/10/3630] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/UnwindInfoRegistrationPlugin.cpp.obj
1165.169 [1706/10/3631] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/JITLinkRedirectableSymbolManager.cpp.obj
1165.297 [1705/10/3632] Building CXX object lib/FileCheck/CMakeFiles/LLVMFileCheck.dir/FileCheck.cpp.obj
1166.289 [1704/10/3633] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.obj
1166.667 [1703/10/3634] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/ExecutionUtils.cpp.obj
1168.782 [1702/10/3635] Linking CXX executable bin\clang.exe
FAILED: bin/clang.exe 
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\Users\tcwg\scoop\apps\cmake\3.31.6\bin\cmake.exe -E vs_link_exe --msvc-ver=1943 --intdir=tools\clang\tools\driver\CMakeFiles\clang.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100226~1.0\arm64\rc.exe --mt=C:\Users\tcwg\scoop\apps\llvm-arm64\current\bin\llvm-mt.exe --manifests  -- C:\Users\tcwg\scoop\apps\llvm-arm64\current\bin\lld-link.exe /nologo @CMakeFiles\clang.rsp  /out:bin\clang.exe /implib:lib\clang.lib /pdb:bin\clang.pdb /version:0.0 /machine:ARM64 /STACK:10000000 /INCREMENTAL:NO /subsystem:console && C:\WINDOWS\system32\cmd.exe /C "cd /D C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\build\tools\clang\tools\driver && C:\Users\tcwg\scoop\apps\cmake\3.31.6\bin\cmake.exe -E copy C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/bin/clang.exe C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/./bin/clang++.exe && cd /D C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\build\tools\clang\tools\driver && C:\Users\tcwg\scoop\apps\cmake\3.31.6\bin\cmake.exe -E copy C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/bin/clang.exe C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/./bin/clang-cl.exe && cd /D C:\Users\tcwg\llvm-worker\clang-arm64-windows-msvc\build\tools\clang\tools\driver && C:\Users\tcwg\scoop\apps\cmake\3.31.6\bin\cmake.exe -E copy C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/bin/clang.exe C:/Users/tcwg/llvm-worker/clang-arm64-windows-msvc/build/./bin/clang-cpp.exe""
LINK: command "C:\Users\tcwg\scoop\apps\llvm-arm64\current\bin\lld-link.exe /nologo @CMakeFiles\clang.rsp /out:bin\clang.exe /implib:lib\clang.lib /pdb:bin\clang.pdb /version:0.0 /machine:ARM64 /STACK:10000000 /INCREMENTAL:NO /subsystem:console /MANIFEST:EMBED,ID=1" failed (exit code 1) with the following output:
lld-link: error: failed to write output 'bin\clang.exe': permission denied

1169.614 [1702/9/3636] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/IndirectionUtils.cpp.obj
1171.066 [1702/8/3637] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/LLJIT.cpp.obj
1171.106 [1702/7/3638] Building CXX object lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/ExternalFunctions.cpp.obj
1171.149 [1702/6/3639] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/Speculation.cpp.obj
1172.018 [1702/5/3640] Building CXX object lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/Interpreter.cpp.obj
1172.429 [1702/4/3641] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/OrcV2CBindings.cpp.obj
1172.920 [1702/3/3642] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/ReOptimizeLayer.cpp.obj
1173.006 [1702/2/3643] Building CXX object lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/Execution.cpp.obj
1174.043 [1702/1/3644] Building CXX object lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/SpeculateAnalyses.cpp.obj
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/151585