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/shared_library.cpp

@@ -23,7 +23,6 @@
 #include "lib/common/environment.hpp"
 #include "lib/common/logging.hpp"
 #include "lib/common/static_object.hpp"
-#include "lib/rocprofiler-sdk/allocator.hpp"
 #include "lib/rocprofiler-sdk/registration.hpp"
 
 #include <iostream>