refactor: remove obsolete branch

Top-level accessor utilities validate ndarray attributes, such as
shape elements being nonnegative integers, etc.

Author: kgryte

lib/node_modules/@stdlib/ndarray/zeros-like/lib/main.js

@@ -129,9 +129,6 @@ function zerosLike( x ) {
 	ndims = sh.length;
 	if ( ndims > 0 ) {
 		len = numel( sh );
-		if ( len < 0 ) {
-			len = 0; // note: we should only get here if an inferred shape is invalid (i.e., contains negative dimension sizes)
-		}
 		st = shape2strides( sh, order );
 	} else {
 		// For 0-dimensional arrays, the buffer should contain a single element...