tree ac540906b2d661e9ce585279a2882519bd148496
parent 82fb453b52eb7ca0c54803b57a6cb734a3f02b37
author Ian Lake <ilake@google.com> 1598571408 -0700
committer Ian Lake <ilake@google.com> 1598571768 -0700

Deprecate LiveData.observe Kotlin extension

With the move to Kotlin 1.4, Kotlin itself
is able to convert the default observe() to the
lambda syntax previously only available when
using the Kotlin extension. To avoid users seeing
"Candidate resolution will be changed soon" errors,
we should deprecate our Kotlin extension as it
is no longer needed.

Test: ./gradlew bOS
Relnote: "The `LiveData.observe()` Kotlin extension
necessary to use lambda syntax is now deprecated as it
is not necessary when using Kotlin 1.4."

Change-Id: I40d3f40cbaebda0df2292d60704d9c19c9d835b9