refactoring: delete redundant functions in AdministrationTest class

src/test/java/org/example/AdministrationTest.java

@@ -154,37 +154,6 @@ class AdministrationTest {
         assertEquals("A2002", result.getAdminId(), "The ID should match the one searched for.");
     }
 
-    @Test
-    void addStudentTest() {
-        Administration administration = new Administration();
-        Student student = new Student("Alice", "S1001", "Student");
-
-        // Initially, no student should be found
-        assertNull(administration.findStudentById("S1001"));
-
-        // Add the student
-        administration.addStudents(student);
-
-        // Now, the student should be found
-        assertNotNull(administration.findStudentById("S1001"));
-        assertEquals("Alice", administration.findStudentById("S1001").getStudentName());
-    }
-
-    @Test
-    void testDeleteStudent() {
-        Administration administration = new Administration();
-        Student student = new Student("Bob", "S1002", "Student");
-
-        // Add the student and verify they're added
-        administration.addStudents(student);
-        assertNotNull(administration.findStudentById("S1002"));
-
-        // Delete the student
-        assertTrue(administration.deleteStudents("S1002"));
-
-        // Verify the student is no longer found
-        assertNull(administration.findStudentById("S1002"));
-    }
 
     /**
      * Test method for {@link Administration#addStudents(Student)}.