Further spec simplifications, update typescript sample

Author: bterlson

.gitignore

@@ -132,3 +132,6 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+
+samples/python/venv/
+samples/typescript/generated-client/

main.tsp

@@ -14,10 +14,6 @@ using JsonSchema;
 @jsonSchema
 namespace Todo;
 
-// should not be necessary, bug here in tsp.
-@encode("binary")
-scalar myBytes extends bytes;
-
 @jsonSchema
 model User {
   /** An autogenerated unique id for the user */