GEODE-10182: Remove no longer needed null check.

[pivotal-eshu]

For all changes:

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[nabarunnag]

is it because event.getOperation().isEntry() is already called in the callers of this method? and an NPE will be thrown even before the execution reaches till this point ?

[pivotal-eshu]

is it because event.getOperation().isEntry() is already called in the callers of this method? and an NPE will be thrown even before the execution reaches till this point ?

The check is now in TXState.attachFilterProfileInformation which executed before the to be removed code path.
if (ev.getOperation() == null) {
// A read op with detect read conflicts does not need filter routing.
continue;
}