Revert "h26xparse: Resend PPS/SPS after seek"

This reverts commit fe116092cdcda0d1d100e1dbbc4577cd9e4e074a.
Our video decoder needn't SPS/PPS after seek. The commit will cause
below stream seek hang.
SHAVectors/H265Dec/Conformance/TS/HEVC_640x360_AACLC_44.1Khz_2ch.ts
SHAVectors/H265Dec/Conformance/MKV/HEVC_848x480_24fps_MP2_48Khz_2ch_320Kbps_Sintel-Trailer.mkv

upstream status: imx specific
2 files changed