mark a failing test using swiftbuild as withKnowIssue (moduleDirectDeps2)

This was previously marked as a known Issue before but got changed in
another PR resulting in a PR merge race causing breakage.

Author: daveinglis

Tests/FunctionalTests/ModuleAliasingFixtureTests.swift

@@ -122,7 +122,7 @@ struct ModuleAliasingFixtureTests {
             )
         }
         } when: {
-            ProcessInfo.hostOperatingSystem == .windows && buildSystem == .swiftbuild
+            buildSystem == .swiftbuild
         }
     }