Revert "[ModuleInterface] Ignore SDKSettings.json in "sourceFiles""

This reverts commit 35e4fa8.

Author: hamishknight

test/ModuleInterface/clang-args-transitive-availability.swift

@@ -1,3 +1,4 @@
+// REQUIRES: rdar151740742
 // This test ensures that the parent invocation's '-Xcc X' flags are inherited when building dependency modules
 // RUN: %empty-directory(%t)
 
@@ -9,6 +10,8 @@
 // RUN: %validate-json %t/deps.json &>/dev/null
 // RUN: %FileCheck %s < %t/deps.json
 
+// REQUIRES: rdar151740686
+
 import ImportsMacroSpecificClangModule
 
 // CHECK:      "directDependencies": [
@@ -51,7 +54,7 @@ import ImportsMacroSpecificClangModule
 // CHECK-NEXT:      "sourceFiles": [
 // CHECK-DAG:        "{{.*}}OnlyWithMacro.h"
 // CHECK-DAG:        "{{.*}}module.modulemap"
-// CHECK:           ],
+// CHECK-NEXT:      ],
 // CHECK-NEXT:      "directDependencies": [
 // CHECK-NEXT:      ],
 // CHECK-NEXT:      "linkLibraries": [