activate Vector tests that work now (see #3888)

std/haxe/ds/Vector.hx

@@ -220,7 +220,6 @@ abstract Vector<T>(VectorData<T>) {
 		#end
 	}
 
-	#if !cs
 	/**
 		Returns a shallow copy of `this` Vector.
 
@@ -301,6 +300,4 @@ abstract Vector<T>(VectorData<T>) {
 		this.sort(f);
 		#end
 	}
-
-	#end
 }

tests/unit/src/unitstd/haxe/ds/Vector.unit.hx

@@ -102,7 +102,6 @@ eq(3, res);
 
 // copy
 
-#if (!python && !cs)
 var i0 = new IntWrap(1);
 var i1 = new IntWrap(1);
 var i2 = new IntWrap(5);
@@ -159,6 +158,4 @@ vec[0] == -12;
 vec[1] == 0;
 vec[2] == 99;
 vec[3] == 101;
-#end
-
 #end