cairomm: don't include cairo.inc

* we were overriding most variables from cairo.inc

* fixes following QA warnings:
  cairomm-1.10.0: cairomm: configure was passed unrecognised options:
    --disable-egl --enable-tee --with-x --disable-glesv2
    --disable-valgrind --disable-some-floating-point
    [unknown-configure-option]

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>