Grouping and remove from list

I have following type

public class Parameter
{
   public string Name {get;set;}
   public string PathType {get;set;}
}

My parameter list like:

List<Parameter> params = new List<Parameter>();
params.Add(new Parameter{ Name ="A", PathType ="path" });
params.Add(new Parameter{ Name ="B", PathType ="query" });
params.Add(new Parameter{ Name ="C", PathType ="path" });
params.Add(new Parameter{ Name ="C", PathType ="query" });
params.Add(new Parameter{ Name ="D", PathType ="path" });
params.Add(new Parameter{ Name ="D", PathType ="query" });
params.Add(new Parameter{ Name ="D", PathType ="body" });

I need to find parameters that have the same Name (like: C and D) where PathType equals path and query. Sorry for my English, it is a little bit difficult to explain. I want to find

 Name ="C", PathType ="path"
 Name ="C", PathType ="query"
 Name ="D", PathType ="path"
 Name ="D", PathType ="query"

Then remove all where PathType = "query". Finally result should be

Name ="A", PathType ="path" 
Name ="B", PathType ="query"
Name ="C", PathType ="path" 
Name ="D", PathType ="path" 
Name ="D", PathType ="body" 

My code

var groupedParams = params.GroupBy(a => a.Name, StringComparer.InvariantCultureIgnoreCase).ToDictionary(t => t.Key);
foreach (var parameter in params) {
    if (groupedParams.ContainsKey(parameter.Name)) {
        var temp = groupedParams[parameter.Name];
        if (temp.Count(x => x.PathType.ToLower() == "path") == 1 && temp.Count(x => x.PathType.ToLower() == "query") == 1) {
            params.Remove(parameter);
        }
    }
}

I need to group by name but remove only when there are path and query for that name. Please suggest how can I do in in other way? Thanks