Revert "Refine documentation for Process.setThreadPriority"

This reverts commit c3648a82f1.

Reason for revert: will cause lock contention

Bug: 139521784
Test: build pass
Change-Id: Ic10951493ec8dda4e5a5adcbd1c3cb3be3b64782

core/java/android/os/Process.java

@@ -851,12 +851,11 @@ public class Process {
 
     /**
      * Set the priority of a thread, based on Linux priorities.
-     *
-     * @param tid The identifier of the thread/process to change. It should be
-     * the native thread id but not the managed id of {@link java.lang.Thread}.
+     * 
+     * @param tid The identifier of the thread/process to change.
      * @param priority A Linux priority level, from -20 for highest scheduling
      * priority to 19 for lowest scheduling priority.
-     *
+     * 
      * @throws IllegalArgumentException Throws IllegalArgumentException if
      * <var>tid</var> does not exist.
      * @throws SecurityException Throws SecurityException if your process does