Remove forward port for weston

Remove forward port for weston

 * The forward port on weston is now merged in weston upstream
 * fix the patch 0001-weston-patch-for-wl-shell-emulator.patch for
   weston 1.11

 patch -> commit id from upstream
 0001-ivi-shell-fix-TODO-which-expects-only-one-screen-in-.patch b216c92d4d19d4b88817d088038de90f3d95ec06
 0002-ivi-shell-avoid-inserting-a-ivi_layer-to-multiple-sc.patch 77b0ee18a2e02e6084ece3d04914f7e8f4c6dcb9
 0003-ivi-shell-fix-layout_layer.view_list-is-not-initiliz.patch fbfa8f21f91dfd1a1d85f9c6b039fe893a36e69b
 0004-ivi-shell-remove-a-code-which-expects-only-a-screen-.patch 747c3865ab7bf8defc7a0cacf148b547c949f303
 0005-ivi-shell-multi-screen-support.-ivi_layout_screen-to.patch b4cb25dc261375bad87d1c1dd058b9716009e6fb
 0006-ivi-shell-transforming-from-a-single-screen-coordina.patch 29babdf099fee228883ab6425811f11135296274
 0007-RFR-ivi-shell-multi-screen-support-to-calcuration-of.patch 1c2618e9ff58d355714bcdde61f87a6e918f3059

Bug-AGL: SPEC-411

Change-Id: I58a23f3fe4046ef2befb594bf0f76f34c4d15312
Signed-off-by: Ronan Le Martret <ronan.lemartret@iot.bzh>