windows: Do not manually load ntdll.dll library

windows: Do not manually load ntdll.dll library

Per Windows Internals, Part 1, Image Loader section, the ntdll.dll library
is always loaded into every process on all NT systems.

So remove code which dynamically loads ntdll.dll library via LoadLibrary()
function and remove also code which changes error reporting mode (used just
for LoadLibrary) as both are not needed.

Also Microsoft C/C++ compilers optimize EXE applications in a way which
expects that the ntdll.dll library is loaded as the first module into the
process before the main EXE module itself.