Fix ReadOnlySpan obsolete message to reference ReadOnlySpan instead of Span

Remove unnecessary CLSCompliant(false) on GetModuleHandle

Author: weshaggard

src/System.Runtime/ref/System.Runtime.cs

@@ -1968,11 +1968,11 @@ public void CopyTo(System.Span<T> destination) { }
         [System.ComponentModel.EditorBrowsableAttribute((System.ComponentModel.EditorBrowsableState)(1))]
         public static System.ReadOnlySpan<T> DangerousCreate(object obj, ref T objectData, int length) { throw null; }
         [System.ComponentModel.EditorBrowsableAttribute((System.ComponentModel.EditorBrowsableState)(1))]
-        [System.ObsoleteAttribute("Equals() on Span will always throw an exception. Use == instead.")]
+        [System.ObsoleteAttribute("Equals() on ReadOnlySpan will always throw an exception. Use == instead.")]
         public override bool Equals(object obj) { throw null; }
         public System.ReadOnlySpan<T>.Enumerator GetEnumerator() { throw null; }
         [System.ComponentModel.EditorBrowsableAttribute((System.ComponentModel.EditorBrowsableState)(1))]
-        [System.ObsoleteAttribute("GetHashCode() on Span will always throw an exception.")]
+        [System.ObsoleteAttribute("GetHashCode() on ReadOnlySpan will always throw an exception.")]
         public override int GetHashCode() { throw null; }
         public static bool operator ==(System.ReadOnlySpan<T> left, System.ReadOnlySpan<T> right) { throw null; }
         public static implicit operator System.ReadOnlySpan<T> (System.ArraySegment<T> arraySegment) { throw null; }
@@ -2030,7 +2030,6 @@ public partial struct RuntimeTypeHandle : System.Runtime.Serialization.ISerializ
         public override bool Equals(object obj) { throw null; }
         public bool Equals(System.RuntimeTypeHandle handle) { throw null; }
         public override int GetHashCode() { throw null; }
-        [System.CLSCompliantAttribute(false)]
         public System.ModuleHandle GetModuleHandle() { throw null; }
         public void GetObjectData(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context) { }
         public static bool operator ==(object left, System.RuntimeTypeHandle right) { throw null; }