remove @Availability annotations since it does not make sense on linux targets

Author: phausler

Foundation/DateComponents.swift

@@ -216,7 +216,6 @@ public struct DateComponents : ReferenceConvertible, Hashable, Equatable, _Mutab
     /// Set the value of one of the properties, using an enumeration value instead of a property name.
     ///
     /// The calendar and timeZone and isLeapMonth properties cannot be set by this method.
-    @available(OSX 10.9, iOS 8.0, *)
     public mutating func setValue(_ value: Int?, for component: Calendar.Component) {
         _applyMutation {
             $0.setValue(_setter(value), forComponent: Calendar._toCalendarUnit([component]))
@@ -226,7 +225,6 @@ public struct DateComponents : ReferenceConvertible, Hashable, Equatable, _Mutab
     /// Returns the value of one of the properties, using an enumeration value instead of a property name.
     ///
     /// The calendar and timeZone and isLeapMonth property values cannot be retrieved by this method.
-    @available(OSX 10.9, iOS 8.0, *)
     public func value(for component: Calendar.Component) -> Int? {
         return _handle.map {
             $0.value(forComponent: Calendar._toCalendarUnit([component]))
@@ -244,7 +242,6 @@ public struct DateComponents : ReferenceConvertible, Hashable, Equatable, _Mutab
     /// If the time zone property is set in the `DateComponents`, it is used.
     ///
     /// The calendar property must be set, or the result is always `false`.
-    @available(OSX 10.9, iOS 8.0, *)
     public var isValidDate: Bool {
         return _handle.map { $0.isValidDate }
     }
@@ -256,7 +253,6 @@ public struct DateComponents : ReferenceConvertible, Hashable, Equatable, _Mutab
     /// Except for some trivial cases (e.g., 'seconds' should be 0 - 59 in any calendar), this method is not necessarily cheap.
     ///
     /// If the time zone property is set in the `DateComponents`, it is used.
-    @available(OSX 10.9, iOS 8.0, *)
     public func isValidDate(in calendar: Calendar) -> Bool {
         return _handle.map { $0.isValidDate(in: calendar) }
     }

Foundation/NSStringAPI.swift

@@ -228,7 +228,6 @@ extension String {
 
   /// A capitalized representation of the `String` that is produced
   /// using the current locale.
-  @available(OSX 10.11, iOS 9.0, *)
   public var localizedCapitalized: String {
     return _ns.localizedCapitalized
   }
@@ -955,7 +954,6 @@ extension String {
 
   /// A lowercase version of the string that is produced using the current
   /// locale.
-  @available(OSX 10.11, iOS 9.0, *)
   public var localizedLowercase: String {
     return _ns.localizedLowercase
   }
@@ -1146,7 +1144,6 @@ extension String {
   /// similar to how searches are done generally in the system.  The search is
   /// locale-aware, case and diacritic insensitive.  The exact list of search
   /// options applied may change over time.
-  @available(OSX 10.11, iOS 9.0, *)
   public func localizedStandardContains(_ string: String) -> Bool {
     return _ns.localizedStandardContains(string)
   }
@@ -1161,7 +1158,6 @@ extension String {
   /// similar to how searches are done generally in the system.  The search is
   /// locale-aware, case and diacritic insensitive.  The exact list of search
   /// options applied may change over time.
-  @available(OSX 10.11, iOS 9.0, *)
   public func localizedStandardRange(of string: String) -> Range<Index>? {
     return _optionalRange(_ns.localizedStandardRange(of: string))
   }
@@ -1419,7 +1415,6 @@ extension String {
 
   /// An uppercase version of the string that is produced using the current
   /// locale.
-  @available(OSX 10.11, iOS 9.0, *)
   public var localizedUppercase: String {
     return _ns.localizedUppercase as String
   }
@@ -1472,7 +1467,6 @@ extension String {
 
   /// Perform string transliteration.
 #if false
-  @available(OSX 10.11, iOS 9.0, *)
   public func applyingTransform(
     _ transform: StringTransform, reverse: Bool
   ) -> String? {

Foundation/UUID.swift

@@ -21,7 +21,6 @@ import CoreFoundation
 #endif
 
 /// Represents UUID strings, which can be used to uniquely identify types, interfaces, and other items.
-@available(OSX 10.8, iOS 6.0, *)
 public struct UUID : ReferenceConvertible, Hashable, Equatable, CustomStringConvertible {
     public typealias ReferenceType = NSUUID