Rollback of https://github.com/google/ExoPlayer/commit/f92a9a628a3b2b8e189e583d209268b9d49d8978

*** Original commit ***

Bump Guava version to 31.1

***

PiperOrigin-RevId: 526046600

constants.gradle

@@ -28,7 +28,7 @@ project.ext {
     junitVersion = '4.13.2'
     // Use the same Guava version as the Android repo:
     // https://cs.android.com/android/platform/superproject/+/master:external/guava/METADATA
-    guavaVersion = '31.1-android'
+    guavaVersion = '31.0.1-android'
     mockitoVersion = '3.12.4'
     robolectricVersion = '4.8.1'
     // Keep this in sync with Google's internal Checker Framework version.