Revert^2 "Cache Java codegen'd flags in static member variables."

This reverts commit efda207c09de55f133b22d397a78add7673fd560.

Reason for revert: this unrevert contains the fix for b/311187402

Test: cargo test
Change-Id: I210aebd30edd864a7c141ede336c12aebf4f1fcd
diff --git a/tools/aconfig/tests/first.values b/tools/aconfig/tests/first.values
index a450f78..448fb3a 100644
--- a/tools/aconfig/tests/first.values
+++ b/tools/aconfig/tests/first.values
@@ -18,6 +18,12 @@
 }
 flag_value {
     package: "com.android.aconfig.test"
+    name: "disabled_rw_2"
+    state: DISABLED
+    permission: READ_WRITE
+}
+flag_value {
+    package: "com.android.aconfig.test"
     name: "enabled_fixed_ro"
     state: ENABLED
     permission: READ_ONLY