Remove obsolete llndk_library

Remove llndk_library in favor of cc_library with llndk.symbol_file.

Bug: 170784825
Test: m checkbuild
Test: TestLlndkLibrary
Change-Id: I43580976589a7a2a176d7442be53fa043c0c8324
diff --git a/apex/apex_test.go b/apex/apex_test.go
index c2378fc..956b8d9 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -1355,12 +1355,9 @@
 				system_shared_libs: [],
 				stl: "none",
 				stubs: { versions: ["29","30"] },
-				llndk_stubs: "libbar.llndk",
-			}
-
-			llndk_library {
-				name: "libbar.llndk",
-				symbol_file: "",
+				llndk: {
+					symbol_file: "libbar.map.txt",
+				}
 			}
 			`,
 				setUseVendorAllowListForTest([]string{"myapex"}),