editeng a11y: Drop AccessibleContextBase::getImplementationId

It does the same as the ImplInheritanceHelper base class
implementation.

Change-Id: Ic9bf15d7c3798640fcf47a7060cf3d28c6edc694
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/186749
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins

editeng/source/accessibility/AccessibleContextBase.cxx

@@ -332,17 +332,6 @@ uno::Sequence< OUString > SAL_CALL
         u"com.sun.star.accessibility.AccessibleContext"_ustr};
 }
 
-
-// XTypeProvider
-
-uno::Sequence<sal_Int8> SAL_CALL
-    AccessibleContextBase::getImplementationId()
-{
-    return css::uno::Sequence<sal_Int8>();
-}
-
-// internal
-
 void SAL_CALL AccessibleContextBase::disposing()
 {
     SetState (AccessibleStateType::DEFUNC);

include/editeng/AccessibleContextBase.hxx

@@ -227,14 +227,6 @@ public:
     virtual css::uno::Sequence< OUString> SAL_CALL
         getSupportedServiceNames() override;
 
-
-    //=====  XTypeProvider  ===================================================
-
-    /** Returns an implementation id.
-    */
-    virtual css::uno::Sequence<sal_Int8> SAL_CALL
-        getImplementationId() override;
-
     /** Check whether or not the object has been disposed (or is in the
         state of being disposed).