Auto merge of #110 - neithernut:remove-residual-storeentry-methods, r=matthiasbeyer
Auto merge of #110 - neithernut:remove-residual-storeentry-methods, r=matthiasbeyer

Remove methods which are not needed anymore

These methods were intended for managing cached entries. Sice it was
decided not to serve caching in the store, these methods are no longer
needed.

matthiasbeyer/imag,matthiasbeyer/imag,mario-kr/imag,mario-kr/imag