libvmaf: replace integer_motion with pipelined v2 variant, rename

Author: kylophone

libvmaf/src/feature/feature_extractor.c

@@ -48,7 +48,6 @@ extern VmafFeatureExtractor vmaf_fex_psnr;
 extern VmafFeatureExtractor vmaf_fex_psnr_hvs;
 extern VmafFeatureExtractor vmaf_fex_integer_adm;
 extern VmafFeatureExtractor vmaf_fex_integer_motion;
-extern VmafFeatureExtractor vmaf_fex_integer_motion_v2;
 extern VmafFeatureExtractor vmaf_fex_integer_vif;
 extern VmafFeatureExtractor vmaf_fex_cambi;
 #if HAVE_CUDA
@@ -76,7 +75,6 @@ static VmafFeatureExtractor *feature_extractor_list[] = {
     &vmaf_fex_psnr_hvs,
     &vmaf_fex_integer_adm,
     &vmaf_fex_integer_motion,
-    &vmaf_fex_integer_motion_v2,
     &vmaf_fex_integer_vif,
     &vmaf_fex_cambi,
 #if HAVE_CUDA