IOS: Removed PA2ECPublicKey.isValid, which is no longer required.
IOS: Removed PA2ECPublicKey.isValid, which is no longer required.

lime-company/lime-security-powerauth-mobile-sdk,lime-company/lime-security-powerauth-mobile-sdk,lime-company/lime-security-powerauth-mobile-sdk,lime-company/lime-security-powerauth-mobile-sdk,lime-company/lime-security-powerauth-mobile-sdk