[EFL][WK2] Remove unneeded EwkViewImpl::informLoadCommitted()
https://bugs.webkit.org/show_bug.cgi?id=106010

Reviewed by Gyuyoung Kim.

Removed EwkViewImpl::informLoadCommitted() method to simplify the code.

* UIProcess/API/efl/EwkViewImpl.cpp:
* UIProcess/API/efl/EwkViewImpl.h:
* UIProcess/efl/PageClientBase.h:
(PageClientBase):
* UIProcess/efl/PageLoadClientEfl.cpp:
(WebKit::PageLoadClientEfl::didCommitLoadForFrame):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138780 268f45cc-cd09-0410-ab3c-d52691b4dbfc