Remove obsolete codegen test data

compiler/testData/codegen/box/controlStructures/bottles.kt

@@ -0,0 +1,9 @@
+fun box(): String {
+    var bottles = 99
+    while (bottles > 0) {
+        // System.out.println("bottles of beer on the wall");
+        bottles -= 1
+        bottles--
+    }
+    return if (bottles == -1) "OK" else "Fail $bottles"
+}