Remove mSeen from AccessPoint.

Clean up unused variable and associated methods.

Bug: 64533622
Test: runtest --path
frameworks/base/packages/SettingsLib/tests/integ/src/com/android/settingslib/wifi/AccessPointTest.java

Change-Id: Ic7e2e0e606647aed95a6fb483f7c818c81e3bf3f
1 file changed