gstplay: don't print error log in warning_cb
Do we really need print warning log as error? Can we change this error log into warning log?
eg. below log was print as waring in 1.18.x
0:00:14.133331000 217430 0xaaaafc8fdb00 ERROR gst-play gstplay.c:1055:warning_cb: Warning: A lot of buffers are being dropped. (gst-core-error-quark, 13)
Edited by Haihua Hu