fix(typecheck): review check for ArrayBuffer

Apparently there's not a good easy way to check for something
being an ArrayBuffer (isView returns false).  Since it's an
error condition anyway let it error out somewhere else.

Author: pieper

examples/vtkDisplay/index.html

@@ -452,10 +452,6 @@ <h2>Volume:</h2>
     //
     function part10ToVolumeActor(part10) {
       part10 = Array.isArray(part10) ? part10[0] : part10;
-      if (!ArrayBuffer.isView(part10)) {
-          console.error("Invalid part10 binary retrieved", part10);
-          return;
-      }
 
       dataset = DICOMZero.datasetFromArrayBuffer(part10);