Clean up obsolete aliases for Truth.

Bug: 255714762
Test: presubmit
Change-Id: I47c6b167ddb2009ba6e582b089d8b84745acd589
diff --git a/tests/common/Android.bp b/tests/common/Android.bp
index 2904fad..dd23723 100644
--- a/tests/common/Android.bp
+++ b/tests/common/Android.bp
@@ -32,7 +32,7 @@
         "WallpaperPicker2TestLib",
         "androidx.annotation_annotation",
         "kotlinx_coroutines_test",
-        "truth-prebuilt",
+        "truth",
     ],
 
     platform_apis: true,
diff --git a/tests/robotests/Android.bp b/tests/robotests/Android.bp
index ed684f4..c34ed2c 100644
--- a/tests/robotests/Android.bp
+++ b/tests/robotests/Android.bp
@@ -1,4 +1,3 @@
-
 package {
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
@@ -17,7 +16,7 @@
         "androidx.test.rules",
         "junit",
         "kotlinx_coroutines_test",
-        "truth-prebuilt",
+        "truth",
     ],
     libs: [
         "androidx.test.core",