docs: update example

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/constants/float16/sign-mask/examples/index.js

@@ -19,7 +19,6 @@
 'use strict';
 
 var toWord = require( '@stdlib/number/float16/base/to-word' );
-var fromWord = require( '@stdlib/number/float16/base/from-word' );
 var toBinaryString = require( '@stdlib/number/uint16/base/to-binary-string' );
 var FLOAT16_SIGN_MASK = require( './../lib' );
 
@@ -32,6 +31,3 @@ console.log( 'Isolate sign bits: %s', toBinaryString( out ) );
 
 out = w & (~FLOAT16_SIGN_MASK);
 console.log( 'Turn off sign bits: %s', toBinaryString( out ) );
-
-out = fromWord( out );
-console.log( 'Value: %d', out );