test: remove redundant fchmod test

[ZYSzys]

We test fs.fchmod function in test-fs-fchmod.js, so the test snippet in test-fs-chmod.js is redundant and remove it now.

node/test/parallel/test-fs-fchmod.js

Lines 10 to 20 in 903630e

	// Check input type
	[false,null,undefined,{},[],''].forEach((input)=>{
	consterrObj={
	code: 'ERR_INVALID_ARG_TYPE',
	name: 'TypeError [ERR_INVALID_ARG_TYPE]',
	message: 'The "fd" argument must be of type number. Received type '+
	typeofinput
	};
	assert.throws(()=>fs.fchmod(input),errObj);
	assert.throws(()=>fs.fchmodSync(input),errObj);
	});

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

[danbev]

CI: https://ci.nodejs.org/job/node-test-pull-request/19962/

[addaleax]

Landed in ff0f99b 🎉