avutil/internal: remove FF_ALLOCx{_ARRAY}_OR_GOTO macros

These functions have a terrible design, let us fix them before extending
them.
First design mistake: no error code. A helper function for testing
memory allocation failure where AVERROR(ENOMEM) does not appear is
absurd.

Second design mistake: printing a message. Return the error code, let
the caller print the error message.

Third design mistake: hard-coded use of goto.

http://ffmpeg.org/pipermail/ffmpeg-devel/2020-May/262544.htmlSigned-off-by: Limin Wang <lance.lmwang@gmail.com>

libavutil/internal.h

@@ -140,42 +140,6 @@
 #define FF_ALLOC_TYPED_ARRAY(p, nelem)  (p = av_malloc_array(nelem, sizeof(*p)))
 #define FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_mallocz_array(nelem, sizeof(*p)))
 
-#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
-{\
-    p = av_malloc(size);\
-    if (!(p) && (size) != 0) {\
-        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
-        goto label;\
-    }\
-}
-
-#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
-{\
-    p = av_mallocz(size);\
-    if (!(p) && (size) != 0) {\
-        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
-        goto label;\
-    }\
-}
-
-#define FF_ALLOC_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)\
-{\
-    p = av_malloc_array(nelem, elsize);\
-    if (!p) {\
-        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
-        goto label;\
-    }\
-}
-
-#define FF_ALLOCZ_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)\
-{\
-    p = av_mallocz_array(nelem, elsize);\
-    if (!p) {\
-        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
-        goto label;\
-    }\
-}
-
 #include "libm.h"
 
 /**