remove CallControl#close()

Clients cannot make CallControl a final object inside their
representation of a Call object and therefore auto-closeable cannot be
called.

bug: 265074967
Test: none
Change-Id: Ie91db3a249711703f1665a39c78981ac4deb9317
diff --git a/tests/src/com/android/server/telecom/tests/CallControlTest.java b/tests/src/com/android/server/telecom/tests/CallControlTest.java
index 279fcc8..2613206 100644
--- a/tests/src/com/android/server/telecom/tests/CallControlTest.java
+++ b/tests/src/com/android/server/telecom/tests/CallControlTest.java
@@ -75,17 +75,4 @@
                 control.setInactive(Runnable::run, result -> {
                 }));
     }
-
-    @Test
-    public void testClose() {
-        // GIVEN
-        CallControl control = new CallControl(CALL_ID_1, mICallControl, mRepository, mHandle);
-
-        // WHEN
-        control.close();
-
-        // THEN
-        verify(mRepository, times(1))
-                .removeCallFromServiceWrapper(mHandle, CALL_ID_1);
-    }
 }