test[nodeJS] 048 File deletion (async)

"048-2 Deleting files with #unlink:with:"
'Content generated by S8.' outputToFile: (TestPath,'Sample48-2.txt').
NodeJS fs unlink: (TestPath, 'Sample48-2.txt') with:[:error|
   error isNil ifFalse: [ ^self error: '048-2' ,error].
]