Revert "Default annotations_enabled to true for sdk_library"

This reverts commit a9a3173ee3.

Bug: 157010342
Reason for revert: broke ike
Exempt-From-Owner-Approval: clean revert
Change-Id: I592f50d0263ce78ea6d0d335cc7e0f493fcff800

sdk/java_sdk_test.go

@@ -61,20 +61,17 @@ java_import {
 	name: "android_module_lib_stubs_current",
 }
 java_import {
-	name: "core-lambda-stubs",
+	name: "core-lambda-stubs", 
 	sdk_version: "none",
 }
 java_import {
-	name: "ext",
+	name: "ext", 
 	sdk_version: "none",
 }
 java_import {
-	name: "framework",
+	name: "framework", 
 	sdk_version: "none",
 }
-java_library {
-	name: "stub-annotations",
-}
 ` + bp
 
 	return testSdkWithFs(t, bp, fs)