Remove a misleading "flush" function.

This patch removes LocalSocketImpl.flush().  In practice this function
was simply a wrapper around `Thread.sleep(10)`.  All direct calls to
this function have been removed.  The `flush()` function is still called
on several objects that wrap a SocketOutputStream.

This will make booting a device 20ms faster than it currently is.

Bug: 139192244
Test: Build -> flash -> boot -> launch app
Change-Id: I0a96f4bc72461670370f61e847349f32af5ac774

1 files changed, 0 insertions, 12 deletions

diff --git a/core/java/android/bluetooth/BluetoothOutputStream.java b/core/java/android/bluetooth/BluetoothOutputStream.java
index dfec4e102fd4..a0aa2dee9d34 100644
--- a/core/java/android/bluetooth/BluetoothOutputStream.java
+++ b/core/java/android/bluetooth/BluetoothOutputStream.java
@@ -75,16 +75,4 @@ import java.io.OutputStream;
         }
         mSocket.write(b, offset, count);
     }
-
-    /**
-     * Wait until the data in sending queue is emptied. A polling version
-     * for flush implementation. Use it to ensure the writing data afterwards will
-     * be packed in the new RFCOMM frame.
-     *
-     * @throws IOException if an i/o error occurs.
-     * @since Android 4.2.3
-     */
-    public void flush() throws IOException {
-        mSocket.flush();
-    }
 }