Fix data class hashcode generation

It considers Boolean hashCode equal to 1/0 for true/false,
which is different from actual hashCode of the Boolean type.

compiler/backend/src/org/jetbrains/kotlin/codegen/DescriptorAsmUtil.java

@@ -588,14 +588,6 @@ public class DescriptorAsmUtil {
         else if (type.getSort() == Type.OBJECT) {
             iv.invokevirtual("java/lang/Object", "hashCode", "()I", false);
         }
-        else if (type.getSort() == Type.BOOLEAN) {
-            Label end = new Label();
-            iv.dup();
-            iv.ifeq(end);
-            iv.pop();
-            iv.iconst(1);
-            iv.mark(end);
-        }
         else {
             HashCode.Companion.invokeHashCode(iv, type);
         }

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

@@ -1,7 +1,7 @@
 data class A(val a: Boolean)
 
 fun box() : String {
-   if (A(true).hashCode() != 1) return "fail1"
+   if (A(true).hashCode() != 1231) return "fail1"
-   if (A(false).hashCode() !=0) return "fail2"
+   if (A(false).hashCode() != 1237) return "fail2"
    return "OK"
 }

compiler/testData/codegen/bytecodeText/jvm8/hashCode/dataClass.kt

@@ -13,8 +13,8 @@ data class Hash(
 )
 
 
-// 8 \.hashCode
+// 9 \.hashCode
-// 0 INVOKESTATIC java/lang/Boolean\.hashCode \(Z\)I
+// 1 INVOKESTATIC java/lang/Boolean\.hashCode \(Z\)I
 // 1 INVOKESTATIC java/lang/Byte\.hashCode \(B\)I
 // 1 INVOKESTATIC java/lang/Character\.hashCode \(C\)I
 // 1 INVOKESTATIC java/lang/Short\.hashCode \(S\)I