removed unwanted utility

Author: MeKaustubh07

lib/node_modules/@stdlib/blas/ext/base/ndarray/gnansum/test/test.js

@@ -21,7 +21,6 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
 var ndarray = require( '@stdlib/ndarray/base/ctor' );
 var gnansum = require( './../lib' );