Reverts changes made in #1399. This is a RT api test. For testing hipMemAllocPitch , a new test should be written and that should use correct memset API.
[ROCm/hip commit: 12e1a86ec1]
Added new memory API's hipMemAllocPitch, hipMemAllocHost, hipMemsetD16, hipMemsetD16Async, hipMemsetD8Async
Modified to support all scenarios hipMemcpyParam2DAsync, hipMemcpyParam2D.
[ROCm/hip commit: ba9c6e13e4]