Revert of [es5] Class of object is "Function" if object has [[Call]]. (patchset #3 id:40001 of https://codereview.chromium.org/1307943013/ )

Reason for revert:
[Sheriff] Changes several layout test expectations. Please fix upstream first if intended. E.g.:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/1729

Several lines change from PASS to FAIL.

Original issue's description:
> [es5] Class of object is "Function" if object has [[Call]].
>
> The concept of class was mostly removed from ES6, but we still use the
> class of objects to distinguish object kinds in our builtins.  So update
> this to be in sync with IsCallable (thereby getting rid of the previous
> instance type based tests for callable things completely).
>
> R=jarin@chromium.org, jkummerow@chromium.org
>
> Committed: https://crrev.com/af778389947f1b01fb036756ea3cb8ed8ab98452
> Cr-Commit-Position: refs/heads/master@{#30566}

TBR=jarin@chromium.org,jkummerow@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1306303005

Cr-Commit-Position: refs/heads/master@{#30568}