avformat/rtmppkt: Remove ff_amf_read_bool

Added in 50468f93, but never used.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavformat/rtmppkt.c

@@ -84,14 +84,6 @@ void ff_amf_write_object_end(uint8_t **dst)
     bytestream_put_be24(dst, AMF_DATA_TYPE_OBJECT_END);
 }
 
-int ff_amf_read_bool(GetByteContext *bc, int *val)
-{
-    if (bytestream2_get_byte(bc) != AMF_DATA_TYPE_BOOL)
-        return AVERROR_INVALIDDATA;
-    *val = bytestream2_get_byte(bc);
-    return 0;
-}
-
 int ff_amf_read_number(GetByteContext *bc, double *val)
 {
     uint64_t read;

libavformat/rtmppkt.h

@@ -259,15 +259,6 @@ void ff_amf_write_field_name(uint8_t **dst, const char *str);
  */
 void ff_amf_write_object_end(uint8_t **dst);
 
-/**
- * Read AMF boolean value.
- *
- *@param[in,out] gbc GetByteContext initialized with AMF-formatted data
- *@param[out]    val 0 or 1
- *@return 0 on success or an AVERROR code on failure
-*/
-int ff_amf_read_bool(GetByteContext *gbc, int *val);
-
 /**
  * Read AMF number value.
  *