Remove extra handling around contact id

[eileenmcnaughton]

Overview

It's retrieved a few rows earlier from the contribution - this is from formerly
shared code that does not apply here

Same as #19050 but in paypal express handling code

Before

Extra code

After

poof

Technical Details

Comments

[civibot]

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[seamuslee001]

Jenkins re test this please

[seamuslee001]

@eileenmcnaughton this needs a rebase now but also I wonder about the test coverage here given the other related PR failed because of test coverage on Anet

[eileenmcnaughton]

@seamuslee001 testIPNPaymentExpressRecurSuccess would pick up if there was a problem - unlike the A.net one this is all in the same function

[seamuslee001]

Looks fine to me merging