riched20: Remove the unneeded DEFINE_STDCALL_WRAPPER.

[Dylan Smith]

On Thu, Apr 7, 2011 at 1:00 PM, Dylan Smith <dylan.ah.smith at gmail.com> wrote:
>
> The rest of the richedit code needs to call the ITextHost interface
> using the thiscall calling convention, so on i386 it calls a thunk in
> itextHostStdcallVtbl which are defined using the stdcall calling
> convention, and perform stdcall->thiscall conversion before jumping to
> the thiscall defined method (i.e. the actual method for user provided
> ITextHost, and a thunk to reverse the calling convention in Wine).

Sorry, that last part should read (i.e. the actual method for user
provided ITextHost, OR a thunk to reverse the calling convention for
calling the internal ITextHostImpl).