Sorry this is a late post, not had too much time to reply, have read what you posted. - you want to remove recovery and go back to stock right? -- I've only ever removed recovery once. (Twrp) - grab the stock image and re flash it. And that should do the trick -- (on my HTC though I needed to grab the stock recovery image also) - you may need to find a stock recovery image also to flash.
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// Nexus 5 (D821) // Liquid // UBER //
Note 3 (SM-N9005) // AOSP ROM of variety // Lean or temasek's Kernel // - Dumped. No more Samsung