Remove thread refcount and remove NaClAppDtor()

src/native_client/src/trusted/service_runtime/sel_ldr.h

Index: src/native_client/src/trusted/service_runtime/sel_ldr.h
diff --git a/src/native_client/src/trusted/service_runtime/sel_ldr.h b/src/native_client/src/trusted/service_runtime/sel_ldr.h
index 578937af32972d785d2011af77b78580c0001ee6..cb04d7989f75f8ec537513ae658971482e40ab82 100644
--- a/src/native_client/src/trusted/service_runtime/sel_ldr.h
+++ b/src/native_client/src/trusted/service_runtime/sel_ldr.h
@@ -99,13 +99,6 @@ struct NaClApp {
    * Read-only after load, so accesses do not require locking.
    */
   uintptr_t                 mem_start;
-  /*
-   * Flag to remember whether guard pages may be present.  If true, then
-   * on tear down, NaClTeardownMprotectGuards should be invoked.
-   *
-   * This will probably go away when we remove the NaClAppDtor.
-   */
-  int                       guard_pages_initialized;
 
 #if NACL_ARCH(NACL_BUILD_ARCH) == NACL_x86 && NACL_BUILD_SUBARCH == 32 && __PIC__
   uintptr_t                 pcrel_thunk;
@@ -240,18 +233,6 @@ void  NaClAppIncrVerbosity(void);
 
 int   NaClAppCtor(struct NaClApp  *nap) NACL_WUR;
 
-/* DEPRECATED */
-void NaClAppDtor(struct NaClApp  *nap);
-/*
- * TODO(bsy): remove NaClAppDtor.  This teardown/cleanup activity
- * is better left to the OS.
- *
- * We expect *one* NaClApp per process, and having multiple NaClApp
- * constructed / used is not supported (though some tests do this).
- */
-
-void  NaClAppFreeAllMemory(struct NaClApp *nap);
-
 /*
  * Loads a NaCl ELF file into memory in preparation for running it.
  *