Remove persist.sys.fuse == false code paths

Since Android R, the FUSE prop is always on and FUSE-off is no longer
supported

Test: m
Bug: 160159282
Merged-In: Ic4414b850511fe3b4fc6df3f8b736d21335db820
Change-Id: I5a7643f9ca2f37cd7f264331df76b42df31988d5
diff --git a/VolumeManager.h b/VolumeManager.h
index 932b81c..9640303 100644
--- a/VolumeManager.h
+++ b/VolumeManager.h
@@ -114,9 +114,7 @@
     void createPendingDisksIfNeeded();
     int onSecureKeyguardStateChanged(bool isShowing);
 
-    int setPrimary(const std::shared_ptr<android::vold::VolumeBase>& vol);
-
-    int remountUid(uid_t uid, int32_t remountMode);
+    int remountUid(uid_t uid, int32_t remountMode) { return 0; }
     int remountAppStorageDirs(int uid, int pid, const std::vector<std::string>& packageNames);
 
     /* Aborts all FUSE filesystems, in case the FUSE daemon is no longer up. */