[EFL] Do not initialize g_type in WebProcessMain::platformInitialize()
https://bugs.webkit.org/show_bug.cgi?id=135700

Reviewed by Gyuyoung Kim.

Inspired by r171788.
Glib since 2.36 itself initializes g_type_init.

* WebProcess/efl/WebProcessMainEfl.cpp:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@172371 268f45cc-cd09-0410-ab3c-d52691b4dbfc