Block Hooks: Remove filter global reset from test teardown

[ockham]

#6225 included a test that involved setting the $wp_current_filter global, and then removing it during teardown.

It was pointed out to me in Slack by @TimothyBJacobs that this is unnecessary:

Filters should get automatically reset by the parent tearDown implementation.

It's not the filter function I'm mocking though but the filter hook name (i.e. via the $wp_current_filter global)

I believe that should get reset as well.

wordpress-develop/tests/phpunit/includes/abstract-testcase.php

Line 382 in 9a616a5

$globals = array( 'wp_actions', 'wp_filters', 'wp_current_filter' );

This PR removes the unnecessary reset accordingly.

Follow-up [57790].

Trac ticket: https://core.trac.wordpress.org/ticket/60671

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[ockham]

Committed to Core in https://core.trac.wordpress.org/changeset/57799.

[ockham]

Backported to the 6.5 branch in https://core.trac.wordpress.org/changeset/57803.