清理仓库：删除误传的USB_homework和lianxi文件夹

USB_homework/src/Computer.java

@@ -1,4 +0,0 @@
-package PACKAGE_NAME;
-
-public class Computer {
-}

USB_homework/src/Keyboard.java

@@ -1,4 +0,0 @@
-package PACKAGE_NAME;
-
-public class Keyboard {
-}

USB_homework/src/Main.java

@@ -1,4 +0,0 @@
-package PACKAGE_NAME;
-
-public class Main {
-}

USB_homework/src/Mouse.java

@@ -1,4 +0,0 @@
-package PACKAGE_NAME;
-
-public class Mouse {
-}

USB_homework/src/USB.java

@@ -1,4 +0,0 @@
-package PACKAGE_NAME;
-
-public interface USB {
-}

lianxi/src/com/test/Test.java

@@ -1,4 +0,0 @@
-package com.test;
-
-public class Test {
-}