Remove all unused legacy POS colors.

Author: jaclync

WooCommerce/Classes/POS/Utils/Color+WooCommercePOS.swift

@@ -1,35 +1,8 @@
 import SwiftUI
 
-extension Color {
-
-    static var posAccent: Color {
-        return Color(
-            UIColor(
-                light: .withColorStudio(.wooCommercePurple, shade: .shade40),
-                dark: .withColorStudio(.wooCommercePurple, shade: .shade30)
-            )
-        )
-    }
-
-    // MARK: - Text
-
-    private static var posGray: Color {
-        return Color(
-            UIColor(
-                light: UIColor(.posLightGray),
-                dark: UIColor(.posDarkGray)
-            )
-        )
-    }
-}
-
 // MARK: - Non-adaptive colors
 
 extension Color {
-    private static var posLightGray: Color {
-        return .init(red: 60.0 / 255.0, green: 60.0 / 255.0, blue: 67.0 / 255.0)
-    }
-
     static var posDarkGray: Color {
         return .init(red: 235.0 / 255.0, green: 235.0 / 255.0, blue: 245.0 / 255.0)
     }