LibVideo: Allow bit stream reads to throw errors

Errors are propagated to the user of the decoder so that they can be
aware of specific places where a read failed.

Userland/Libraries/LibVideo/VP9/Utilities.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
+ * Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -10,14 +11,6 @@
 
 namespace Video::VP9 {
 
-#define SAFE_CALL(call)             \
-    do {                            \
-        if (!(call)) [[unlikely]] { \
-            dbgln("FAILED " #call); \
-            return false;           \
-        }                           \
-    } while (0)
-
 u8 clip_3(u8 x, u8 y, u8 z);
 u8 round_2(u8 x, u8 n);