remove all emoji from pullapprove (#314)
remove all emoji from pullapprove (#314)

[skip ci]
BuoyantIO/linkerd,hhtpcd/linkerd,BuoyantIO/linkerd,linkerd/linkerd,hhtpcd/linkerd,denverwilliams/linkerd,pawelprazak/linkerd,pawelprazak/linkerd,pawelprazak/linkerd,denverwilliams/linkerd,linkerd/linkerd,denverwilliams/linkerd,linkerd/linkerd,hhtpcd/linkerd,denverwilliams/linkerd