Makes proper Soong targets for test modules

Bug: 331594637
Flag: NA
Test: tests compile
Change-Id: I523076cfdf7750ab5497c378fac8633acfa30b17
diff --git a/tests/Android.bp b/tests/Android.bp
index 690a1b6..5b12a4a 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -41,13 +41,13 @@
     srcs: [
         ":ThemePickerTests_srcs",
         ":WallpaperPicker2Tests_srcs",
-        "module/src/com/android/customization/TestModule.kt",
     ],
     exclude_srcs: [":ThemePicker_src_prod"],
     static_libs: [
         "WallpaperPicker2TestLib",
         "WallpaperPicker2TestRunner",
         "ThemePickerTestLib",
+        "ThemePickerTestModule",
         "SystemUICustomizationTestUtils",
         "androidx.test.espresso.core",
         "androidx.test.espresso.contrib",