Remove unnecessary assert in AllocatorPimpl::BuildStatsString
Remove unnecessary assert in AllocatorPimpl::BuildStatsString

GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator,GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator,GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator