rpi: Remove create_view and destroy_view implementations

And also remove the vfunc definitions from the compositor as they
are unused now.
diff --git a/configure.ac b/configure.ac
index 93213d4..84f3a79 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,7 +55,7 @@
 
 AC_CHECK_FUNCS([mkostemp strchrnul initgroups])
 
-COMPOSITOR_MODULES="wayland-server >= 1.3.91 pixman-1"
+COMPOSITOR_MODULES="wayland-server >= 1.3.90 pixman-1"
 
 AC_ARG_ENABLE(egl, [  --disable-egl],,
               enable_egl=yes)