Misc cleanup and stale code removal (#1026)

* Remove custom allocators

- remove unused lib/rocprofiler-sdk/allocator.*
- remove unused lib/rocprofiler-sdk/context/allocator.hpp

* Fix rocprofiler_strip_target (rocprofiler_utilities.cmake)

* Remove old HSA_TOOLS_LIB support

- remove OnLoad/OnUnload functions used by HSA_TOOLS_LIB env variable

* Fix linter warnings + specific NOLINT exceptions

- replace bare NOLINT with NOLINT(<warning-name>)

[ROCm/rocprofiler-sdk commit: 5d54682468]

projects/rocprofiler-sdk/source/lib/common/filesystem.hpp

@@ -67,11 +67,11 @@ namespace rocprofiler
 namespace common
 {
 #if defined(ROCPROFILER_HAS_GHC_LIB_FILESYSTEM) && ROCPROFILER_HAS_GHC_LIB_FILESYSTEM > 0
-namespace filesystem = ::ghc::filesystem;  // NOLINT
+namespace filesystem = ::ghc::filesystem;  // NOLINT(misc-unused-alias-decls)
 #elif defined(ROCPROFILER_HAS_CPP_LIB_FILESYSTEM) && ROCPROFILER_HAS_CPP_LIB_FILESYSTEM > 0
-namespace filesystem = ::std::filesystem;  // NOLINT
+namespace filesystem = ::std::filesystem;  // NOLINT(misc-unused-alias-decls)
 #else
-namespace filesystem = ::std::experimental::filesystem;  // NOLINT
+namespace filesystem = ::std::experimental::filesystem;  // NOLINT(misc-unused-alias-decls)
 #endif
 }  // namespace common
 }  // namespace rocprofiler