Remove normalize_home_intent flag

Bug: 378505461
Test: wm presubmit
Flag: EXEMPT remove flag
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f207b00bc1eff76bc788f5a2578e3e3f2c960f6b)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:3f9327ec06278c80fc59171dc4aa2c063d10ee7a)
Merged-In: I071d4d9e451f1aaab5c625444232b2285bbd472a
Change-Id: I071d4d9e451f1aaab5c625444232b2285bbd472a