Remove QV8Bindings class

This class tries to optimise binding compilation with v8. With the
approach in v4 where we don't rewrite binding expressions anymore,
this is not required anymore.

Change-Id: I616aeeba85bc17a950d4c7341b3042ed8aa42bff
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Remove the remaining dependencies onto the binding rewriter

Remove the remaining places that were rewriting bindings. Remove the
binding rewriter class.

Change-Id: Ib1e9121dc10f4526ddb7cf0ae32fecd8ce2d4993
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Get rid of some v8 based code

Change-Id: Iee910dcc1d3148922d2f92055eb06cdb0b889502
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>