Remove wrong comment.

theories/tests/memcpy.v

@@ -6,8 +6,7 @@ Definition memcpy : val := λ: "arg",
   "n" ←ᶜ a_ret (Snd (Snd "arg"));ᶜ
   "pend" ←ᶜ ∗ᶜ (a_ret "p") +∗ᶜ (a_ret "n");ᶜ
   whileᶜ (∗ᶜ (a_ret "p") <∗ᶜ a_ret "pend") {
-    (a_ret "p" +∗=ᶜ ♯1) =ᶜ ∗ᶜ(a_ret "q" +∗=ᶜ ♯1);ᶜ
-    skipᶜ (* sequence point, should be implicit in the def. of while *)
+    (a_ret "p" +∗=ᶜ ♯1) =ᶜ ∗ᶜ(a_ret "q" +∗=ᶜ ♯1)
   }.
 
 Lemma memcpy_spec `{amonadG Σ} lxs lys xs ys n R :