Removed official/yield.lua since it was only required for lua API 3.x and less (darktable 2.0 and before). Removed require from scripts that had included it.

contrib/geoJSON_export.lua

@@ -35,7 +35,6 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-require "official/yield"
 local gettext = dt.gettext
 
 du.check_min_api_version("3.0.0", "geoJSON_export") 

contrib/geoToolbox.lua

@@ -28,7 +28,6 @@ require "geoToolbox"
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-require "official/yield"
 local gettext = dt.gettext
 
 du.check_min_api_version("3.0.0", "geoToolbox") 

contrib/hugin.lua

@@ -40,7 +40,6 @@ local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local log = require "lib/dtutils.log"
 local dtsys = require "lib/dtutils.system"
-require "official/yield"
 local gettext = dt.gettext
 
 local namespace = 'module_hugin'
@@ -227,4 +226,4 @@ dt.register_storage(namespace, _("hugin panorama"), show_status, create_panorama
 
 
 --
--- vim: shiftwidth=2 expandtab tabstop=2 cindent syntax=lua
+-- vim: shiftwidth=2 expandtab tabstop=2 cindent syntax=lua

contrib/pdf_slideshow.lua

@@ -41,7 +41,6 @@ format (all fields can be the empty string):
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-require "official/yield"
 
 local gettext = dt.gettext
 

contrib/slideshowMusic.lua

@@ -27,7 +27,6 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-require "official/yield"
 local gettext = dt.gettext
 
 du.check_min_api_version("2.0.2", "slideshowMusic")