Looks like that was not the way to comment something out

.build.yml

@@ -4,7 +4,6 @@ packages:
   - libsamplerate0-dev
   - libsndfile1-dev
   - libfftw3-dev
-#  - libsleef-dev
   - ladspa-sdk
   - lv2-dev
   - vamp-plugin-sdk
@@ -20,7 +19,6 @@ tasks:
       meson build_speex -Dresampler=speex
       meson build_libsamplerate -Dresampler=libsamplerate
       meson build_fftw -Dfft=fftw
-#      meson build_sleef -Dfft=sleef
       meson build_kissfft -Dfft=kissfft
   - build: |
       cd rubberband
@@ -35,8 +33,6 @@ tasks:
       build_libsamplerate/rubberband -V
       ninja -C build_fftw
       meson test -C build_fftw
-#      ninja -C build_sleef
-#      meson test -C build_sleef
       build_fftw/rubberband -V
       ninja -C build_kissfft
       meson test -C build_kissfft