Remove unnecessary typealiasing

Signed-off-by: Stephen Celis <stephen@stephencelis.com>

Author: stephencelis

SQLite Tests/QueryTests.swift

@@ -481,15 +481,13 @@ private let formatter: NSDateFormatter = {
 
 extension NSDate: Value {
 
-    public typealias Datatype = String
+    public class var declaredDatatype: String { return String.declaredDatatype }
 
-    public class var declaredDatatype: String { return Datatype.declaredDatatype }
-
-    public class func fromDatatypeValue(datatypeValue: Datatype) -> NSDate {
+    public class func fromDatatypeValue(datatypeValue: String) -> NSDate {
         return formatter.dateFromString(datatypeValue)!
     }
 
-    public var datatypeValue: Datatype {
+    public var datatypeValue: String {
         return formatter.stringFromDate(self)
     }
 

SQLite/Query.swift

@@ -809,9 +809,7 @@ public struct Row {
 // MARK: - SequenceType
 extension Query: SequenceType {
 
-    public typealias Generator = QueryGenerator
-
-    public func generate() -> Generator { return Generator(self) }
+    public func generate() -> QueryGenerator { return QueryGenerator(self) }
 
 }