Remove unused attachEgressIgmpReportFilter
The attachEgressIgmpReportFilter is no longer called and its functionality is entirely covered by the attachEgressMulticastReportFilter.
This change removes the unused attachEgressIgmpReportFilter to simplify the codebase.
Corresponding test cases have been updated to exclusively use attachEgressMulticastReportFilter.
Bug: 406086413
Flag: EXEMPT mainline
Test: atest NetworkStackUtilsIntegrationTest
Change-Id: I122c03d54763645ea7f0c52e17a6a278e1300eef
3 files changed