Revert "first commit"

This reverts commit ebf30399fb.

src/main/java/com/codechecker/api/model/ApiChangeKind.java

@@ -1,12 +0,0 @@
-package com.codechecker.api.model;
-
-/**
- * API 变更类型（与类变更 {@link com.codechecker.model.ClassChangeKind} 独立）。
- */
-public enum ApiChangeKind {
-    NEW_ENDPOINT,
-    REMOVED_ENDPOINT,
-    PATH_CHANGED,
-    METHOD_CHANGED,
-    PARAM_CHANGED
-}