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>)

source/lib/rocprofiler-sdk/internal_threading.cpp

@@ -27,7 +27,6 @@
 #include "lib/common/container/stable_vector.hpp"
 #include "lib/common/static_object.hpp"
 #include "lib/common/utility.hpp"
-#include "lib/rocprofiler-sdk/allocator.hpp"
 #include "lib/rocprofiler-sdk/buffer.hpp"
 #include "lib/rocprofiler-sdk/context/context.hpp"
 #include "lib/rocprofiler-sdk/internal_threading.hpp"