Remove duplicate tracks items

[emilylaguna]

Project: #17503

Description

Fixes a couple instances of tracks being duplicated when:

• The People view is accessed
• The Reader Saved list is accessed

To test:

People list

1. Go to the My Site tab
2. Scroll down to the People item
3. Tap on the People item
4. Verify you see only 1: 🔵 Tracked: people_management_list_opened <blog_id: BLOG_ID, site_type: blog>

Reader Saved Accessed

1. Go to the Reader Tab
2. Tap on the 'Saved' item
3. Verify you see only 1: 🔵 Tracked: reader_saved_list_shown <source: reader_filter, subscription_count: COUNT>

Regression Notes

1. Potential unintended areas of impact
   None, adding tracks to specific areas.

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   Manual testing

3. What automated tests I added (or what prevented me from doing so)
   None.

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

You can trigger an installable build for these changes by visiting CircleCI here.

[peril-wordpress-mobile]

You can trigger optional UI/connected tests for these changes by visiting CircleCI here.

[Gio2018]

worked as described. !