Revert "add threads to CI opam install"

This reverts commit ad3f055227cd818d58b30b261950aca961c2ca31.

.travis.yml

@@ -26,7 +26,7 @@ install_linux: &install_linux
   # Install opam + ocaml
   - sudo wget https://raw.github.com/ocaml/opam/master/shell/opam_installer.sh -O - | sh -s /usr/local/bin 4.02.3
   - export OPAMYES=1
-  - opam install camlp4 ocamlfind threads
+  - opam install camlp4 ocamlfind
   - eval `opam config env`
   # Install neko and haxe dependencies
   - sudo add-apt-repository ppa:haxe/snapshots -y
@@ -62,7 +62,7 @@ install_osx: &install_osx
   - travis_retry brew install opam;
   - export OPAMYES=1
   - opam init
-  - opam install camlp4 ocamlfind threads
+  - opam install camlp4 ocamlfind
   - eval `opam config env`
   # Install neko
   - travis_retry brew install neko --HEAD;

appveyor.yml

@@ -34,7 +34,7 @@ install:
     - 7z x "opam32.tar.xz" -so | 7z x -aoa -si -ttar
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && bash opam32/install.sh"'
     - '%CYG_ROOT%/bin/bash -lc "opam init mingw \"https://github.com/fdopen/opam-repository-mingw.git\" --comp 4.02.3+mingw32c --switch 4.02.3+mingw32c --auto-setup --yes"'
-    - '%CYG_ROOT%/bin/bash -lc "opam install camlp4 ocamlfind threads --yes"'
+    - '%CYG_ROOT%/bin/bash -lc "opam install camlp4 ocamlfind --yes"'
     # Install neko
     - choco install neko --prerelease --ignore-dependencies -s 'https://ci.appveyor.com/nuget/neko' -y
     - choco install chocolatey-core.extension php --ignore-dependencies -y