qtaguid.h - remove qtaguid_setPacifier declaration

There does not appear to be *any* implementation...

Additionally in a non-qtaguid eBPF world, this API simply appears meaningless...

cs/p:aosp-master qtaguid_setPacifier -file:system/core/libcutils/include.*/cutils/qtaguid[.]h$

finds nothing, except for:
  test/vts/specification/lib/ndk/bionic/1.0/libcutilsV1.vts

  api: {
    name: "qtaguid_setPacifier"
    return_type: {
      type: TYPE_SCALAR
      scalar_type: "int32_t"
    }
    arg: {
      type: TYPE_SCALAR
      scalar_type: "int32_t"
    }
  }

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I0b7def936920d4dacf90d6bb0a8efb7b09811c6a
diff --git a/libcutils/include/cutils/qtaguid.h b/libcutils/include/cutils/qtaguid.h
index a5ffb03..8902c2b 100644
--- a/libcutils/include/cutils/qtaguid.h
+++ b/libcutils/include/cutils/qtaguid.h
@@ -33,12 +33,6 @@
  */
 extern int qtaguid_untagSocket(int sockfd);
 
-/*
- * Enable/disable qtaguid functionnality at a lower level.
- * When pacified, the kernel will accept commands but do nothing.
- */
-extern int qtaguid_setPacifier(int on);
-
 #ifdef __cplusplus
 }
 #endif