Remove some additional code that depended on the old type propagation.

pkg/kernel/testcases/type-propagation/optional.baseline.txt

Index: pkg/kernel/testcases/type-propagation/optional.baseline.txt
diff --git a/pkg/kernel/testcases/type-propagation/optional.baseline.txt b/pkg/kernel/testcases/type-propagation/optional.baseline.txt
deleted file mode 100644
index cc8f47ef0b0c977c1812e5fca2670ac3a2c9d2c8..0000000000000000000000000000000000000000
--- a/pkg/kernel/testcases/type-propagation/optional.baseline.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-library;
-import self as self;
-import "dart:core" as core;
-
-class Foo extends core::Object {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-  method method(dynamic/core::int* {int} x, [dynamic/core::int* {null,int} y, dynamic/core::int* {null,int} z]) → dynamic/core::String* {string} {
-    return "string";
-  }
-}
-abstract class External extends core::Object {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-  abstract method externalMethod(core::int/<missing type> x, [core::int/<missing type> y, core::int/<missing type> z]) → core::String/<missing type>;
-  abstract method listen(self::Listener/<missing type> listener) → void/<missing type>;
-}
-abstract class Listener extends core::Object {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-  abstract method event(core::String/<missing type> input, [core::int/<missing type> x, core::int/<missing type> y]) → void/<missing type>;
-}
-class TestListener extends self::Listener {
-  constructor •() → void
-    : super self::Listener::•()
-    ;
-  method event(dynamic/core::String* {string} input, [dynamic/core::int* {null,int} x, dynamic/core::int* {null,int} y]) → void/Null {}
-}
-class ExtendedListener extends self::Listener {
-  constructor •() → void
-    : super self::Listener::•()
-    ;
-  method event(dynamic/core::String* {string} input, [dynamic/core::int* {null,int} x, dynamic/core::int* {null,int} y, dynamic/Null z]) → void/Null {}
-}
-class InvalidListener extends core::Object {
-  constructor •() → void
-    : super core::Object::•()
-    ;
-  method event(dynamic/core::String* {string} input, [dynamic/core::int* {null,int} x]) → void/Null {}
-}
-external static method createExternal() → self::External/self::External* {other};
-static method main() → dynamic/Null {
-  dynamic/self::Foo! {other} foo = new self::Foo::•();
-  dynamic/core::String* {string} string1 = foo.method(1);
-  dynamic/core::String* {string} string2 = foo.method(1, 2);
-  dynamic/core::String* {string} string3 = foo.method(1, 2, 3);
-  dynamic/self::External* {other} extern = self::createExternal();
-  dynamic/core::String* {string} string4 = extern.externalMethod(1);
-  dynamic/core::String* {string} string5 = extern.externalMethod(1, 2);
-  dynamic/core::String* {string} string6 = extern.externalMethod(1, 2, 3);
-  extern.listen(new self::TestListener::•());
-  extern.listen(new self::ExtendedListener::•());
-  extern.listen(new self::InvalidListener::•());
-  dynamic/Nothing nothing1 = foo.method();
-  dynamic/Nothing nothing2 = foo.method(1, 2, 3, 4);
-  dynamic/Nothing nothing3 = extern.externalMethod();
-  dynamic/Nothing nothing4 = extern.externalMethod(1, 2, 3, 4);
-}