Remove -fno-strict-aliasing

We don't do fishy things like type punning so it really isn't
necessary, and supplying it prevents certain optimizations.

rebar.config

@@ -8,7 +8,7 @@
 
 {port_env, [
     {"(linux|solaris|freebsd|netbsd|openbsd|dragonfly|darwin|gnu)",
-        "CFLAGS", "$CFLAGS -Ic_src/ -g -Wall -flto -Werror -O3 -fno-strict-aliasing"},
+        "CFLAGS", "$CFLAGS -Ic_src/ -g -Wall -flto -Werror -O3"},
     {"(linux|solaris|freebsd|netbsd|openbsd|dragonfly|darwin|gnu)",
         "CXXFLAGS", "$CXXFLAGS -Ic_src/ -g -Wall -flto -Werror -O3"},