Remove duplicate options import in computed.ts

The module imported both 'options' and 'options as koOptions' from
@tko/utils. Remove the bare 'options' import and use the existing
'koOptions' alias at the one call site.

Author: phillipc

packages/computed/src/computed.ts

@@ -8,7 +8,6 @@ import {
   arrayForEach,
   domNodeIsAttachedToDocument,
   extend,
-  options,
   hasOwnProperty,
   objectForEach,
   options as koOptions,
@@ -427,7 +426,7 @@ computed.fn = {
       }
 
       state.latestValue = newValue
-      if (options.debug) {
+      if (koOptions.debug) {
         this._latestValue = newValue
       }