Remove gst-plugins-ugly dep from README
Remove gst-plugins-ugly dep from README

We don't use it and shouldn't be using it because of the license

peterjoel/servo,paulrouget/servo,emilio/servo,pyfisch/servo,splav/servo,sadmansk/servo,DominoTree/servo,paulrouget/servo,pyfisch/servo,pyfisch/servo,paulrouget/servo,larsbergstrom/servo,larsbergstrom/servo,peterjoel/servo,paulrouget/servo,notriddle/servo,splav/servo,peterjoel/servo,emilio/servo,peterjoel/servo,emilio/servo,notriddle/servo,szeged/servo,saneyuki/servo,paulrouget/servo,szeged/servo,larsbergstrom/servo,splav/servo,emilio/servo,notriddle/servo,sadmansk/servo,DominoTree/servo,nnethercote/servo,szeged/servo,KiChjang/servo,pyfisch/servo,splav/servo,peterjoel/servo,DominoTree/servo,splav/servo,KiChjang/servo,KiChjang/servo,sadmansk/servo,saneyuki/servo,notriddle/servo,KiChjang/servo,nnethercote/servo,splav/servo,notriddle/servo,saneyuki/servo,pyfisch/servo,saneyuki/servo,larsbergstrom/servo,peterjoel/servo,nnethercote/servo,saneyuki/servo,KiChjang/servo,szeged/servo,paulrouget/servo,peterjoel/servo,jimberlage/servo,jimberlage/servo,notriddle/servo,szeged/servo,jimberlage/servo,notriddle/servo,DominoTree/servo,peterjoel/servo,DominoTree/servo,emilio/servo,splav/servo,larsbergstrom/servo,szeged/servo,splav/servo,larsbergstrom/servo,KiChjang/servo,sadmansk/servo,pyfisch/servo,splav/servo,emilio/servo,emilio/servo,DominoTree/servo,szeged/servo,nnethercote/servo,szeged/servo,saneyuki/servo,KiChjang/servo,larsbergstrom/servo,pyfisch/servo,sadmansk/servo,splav/servo,notriddle/servo,jimberlage/servo,szeged/servo,larsbergstrom/servo,KiChjang/servo,sadmansk/servo,emilio/servo,KiChjang/servo,peterjoel/servo,pyfisch/servo,paulrouget/servo,sadmansk/servo,jimberlage/servo,DominoTree/servo,KiChjang/servo,nnethercote/servo,pyfisch/servo,paulrouget/servo,notriddle/servo,nnethercote/servo,nnethercote/servo,paulrouget/servo,DominoTree/servo,saneyuki/servo,notriddle/servo,DominoTree/servo,sadmansk/servo,jimberlage/servo,saneyuki/servo,peterjoel/servo,jimberlage/servo,larsbergstrom/servo,jimberlage/servo,emilio/servo,jimberlage/servo,larsbergstrom/servo,nnethercote/servo,DominoTree/servo,szeged/servo,nnethercote/servo,saneyuki/servo,nnethercote/servo,emilio/servo,saneyuki/servo,pyfisch/servo,paulrouget/servo