(REF) Remove test reference to property which no longer exists

[braders]

Overview

Remove test reference to property which no longer exists.

Before

The test code referenced $parser->_dedupeRuleGroupID = $ruleGroupId;, despite their being no other references to _dedupeRuleGroupID in the codebase; therefore this property is not doing anything.

Furthermore, this means _dedupeRuleGroupID was a dynamic property, deprecated in PHP 8.2.

After

Pointless line of code removed.

Technical Details

The commit 3592a5e4098c9d14b2577a0f6eee5c6c7d471501` removed the _dedupeRuleGroupID property from the CRM_Contact_Import_Parser_Contact class in June last year. Prior to that, setting the _dedupeRuleGroupID property in the test would have made sense.

[civibot]

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