优化：清理无效代码

Author: cn-src

snippets-core/src/main/java/cn/javaer/snippets/type/Geometry.java

@@ -12,11 +12,11 @@ private Geometry(String data) {
         this.data = data;
     }
 
-    public final String data() {
+    public String data() {
         return this.data;
     }
 
     public static Geometry valueOf(String data) {
         return new Geometry(data);
     }
-}
+}