[mac] removed zlib, pcre, mbedtls from brewfile (#10110)

tests/Brewfile

@@ -2,9 +2,6 @@ brew "ocaml"
 brew "camlp5"
 brew "opam"
 brew "ninja"
-brew "zlib"
-brew "pcre"
 brew "awscli"
 brew "cmake"
-brew "pkg-config"
-brew "mbedtls"
+brew "pkg-config"