Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/box/dataClasses/hashCode/float.kt

@@ -0,0 +1,7 @@
+data class A(val a: Float)
+
+fun box() : String {
+   val v1 = A(-10.toFloat()).hashCode()
+   val v2 = (-10.toFloat() as Float?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}