No need to emit envvars for the profile

Emitting the flie name that was was an artifact of a prior approach exploration obsoleted since. This makes the profiles simpler.

Author: kzu

src/SmallSharp/LaunchSettingsGenerator.cs

@@ -25,10 +25,7 @@ where compile
             var settings = new JObject(
                 new JProperty("profiles", new JObject(
                     documents.OrderBy(path => Path.GetFileName(path)).Select(path => new JProperty(Path.GetFileName(path), new JObject(
-                        new JProperty("commandName", "Project"), 
-                        new JProperty("environmentVariables", new JObject(
-                            new JProperty("source", Path.GetFileName(path))
-                        ))
+                        new JProperty("commandName", "Project")
                     )))
                 ))
             );