[gtk-osx] Remove typing package after upgrading pipenv and unpin meson.

[John Ralls <jralls src gnome org>]

commit 9b796e720bf8e1f1db63352bb432eb69afeb2343
Author: John Ralls <jralls ceridwen us>
Date:   Fri Jun 7 09:31:26 2019 -0700

    Remove typing package after upgrading pipenv and unpin meson.
    
    Closes https://gitlab.gnome.org/GNOME/gtk-osx/issues/10

 gtk-osx-setup.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gtk-osx-setup.sh b/gtk-osx-setup.sh
index 4077a2e..98bf881 100755
--- a/gtk-osx-setup.sh
+++ b/gtk-osx-setup.sh
@@ -98,6 +98,7 @@ fi
 
 # Install pipenv
 $PIP install --upgrade --user pipenv==2018.10.09
+$PIP uninstall -y typing
 
 PIPENV="$PYTHONUSERBASE/bin/pipenv"
 
@@ -129,7 +130,7 @@ verify_ssl = true
 
 [packages]
 six = "*"
-meson = {version="==0.49.2"}
+meson = "*"
 
 [scripts]
 jhbuild = "$DEVPREFIX/libexec/run_jhbuild.py"