No. Those were never invocations.
I would dare to say they were:
http://dnd5e.wikidot.com/warlock:eldritch-invocationsLifedrinker
Source: Player's Handbook
Prerequisite: 12th level, Pact of the Blade feature
When you hit a creature with your pact weapon, the creature takes extra necrotic damage equal to your Charisma modifier (minimum 1).
Thirsting Blade
Source: Player's Handbook
Prerequisite: 5th level, Pact of the Blade feature
You can attack with your pact weapon twice, instead of once, whenever you take the Attack action on your turn.
Lifedrinker was a way to add -even more- damage to your attack roll, came online at level 12 I believe, and is something you're likely confusing for Hexblade's immediate feature that lets you use CHR as your melee stat for rolls and damage.
As for Thirsting Blade, yes that's likely being blended into Pact of the Blade, and imo it should since Pact of the Blade by default was really lackluster imo and more flavor than anything else, and if you're going to be a frontliner and going in on it, you should get the extra attack imo. This will likely be replaced by an invocation, or several, for the rest of Hexlblade's feature, that you'll still want like medium armor and shield prof. It's just being rebalanced so you can still have a typical patron and still go melee warlock at the cost of your pact choice and invocations, which is what hexblade already did.
