Delete egl.cfg

egl.cfg is no longer required since android 4.4
Android 4.4 uses a different mechanism to load the OpenGL ES and EGL libraries and the
configuration file
/system/lib/egl/egl.cfg
is
no longer relevant

http://malideveloper.arm.com/downloads/tools/mgd/Mali%20Graphics%20Debugger%20v1.2.2%20User%20Guide.pdf (section 4.3.3)