This call to isAbstractMethodOfAny was in Fir2IrLazyClass since its
inception in 0622be14a5, and there's no explanation why this was
necessary. Removing it does not seem to break anything, but fixes the
case when IrFakeOverrideRebuilder is enabled and when Java base class
declares an abstract equals/hashCode/toString which is not overridden in
the Kotlin subclass.
#KT-63443 Fixed
Alexander Udalov