More cleanup.

Ix.NET/Source/System.Interactive/Do.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -154,4 +151,4 @@ namespace System.Linq
             }
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/Empty.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -25,4 +22,4 @@ namespace System.Linq
             return !source.Any();
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/Expand.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -45,4 +42,4 @@ namespace System.Linq
             }
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/Finally.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -41,4 +38,4 @@ namespace System.Linq
             }
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/For.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -39,4 +36,4 @@ namespace System.Linq
             return source.Select(resultSelector);
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/ForEach.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -46,4 +43,4 @@ namespace System.Linq
                 onNext(item, checked(i++));
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/Generate.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -39,4 +36,4 @@ namespace System.Linq
                 yield return resultSelector(i);
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/Hide.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -35,4 +32,4 @@ namespace System.Linq
                 yield return item;
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/IAwaitable.cs

@@ -2,11 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Runtime.CompilerServices;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -20,4 +16,4 @@ namespace System.Linq
         bool IsCompleted { get; }
         void GetResult();
     }
-}
+}

Ix.NET/Source/System.Interactive/IYielder.cs

@@ -2,11 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Security;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -109,4 +105,4 @@ namespace System.Linq
             throw new NotSupportedException();
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/If.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -49,4 +46,4 @@ namespace System.Linq
             return Defer(() => condition() ? thenSource : Enumerable.Empty<TResult>());
         }
     }
-}
+}

Ix.NET/Source/System.Interactive/IgnoreElements.cs

@@ -2,10 +2,7 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
 namespace System.Linq
 {
@@ -33,4 +30,4 @@ namespace System.Linq
             yield break;
         }
     }
-}
+}