Remove ffmpeg_dir redefine (#525)

* match ffmpeg SDK location

The SDK now ships with version 7 of ffmpeg:
`AMF/tree/master/Thirdparty/ffmpeg/ffmpeg/ffmpeg-7.0`

* Remove ffmpeg_dir redefine

---------

Co-authored-by: Huts, Roman <[email protected]>

Author: totaam

amf/public/src/components/ComponentsFFMPEG/Makefile

@@ -37,7 +37,6 @@ uname_p := $(shell uname -p)
   platform_name=lnx
 endif
 
-ffmpeg_dir = $(amf_root)/../Thirdparty/ffmpeg/ffmpeg/ffmpeg-6.0/$(platform_name)$(host_bits)/release
 
 pp_defines += \
   AMF_COMPONENT_FFMPEG_EXPORTS