Reverted examples/meson.build to the version in master

The use of deps_libpistache here, rather than just pistache_dep, is no
longer needed thanks to fix pistacheio#1225
(pistacheio#1225).

examples/meson.build

@@ -14,12 +14,6 @@ pistache_example_files = [
 
 threads_dep = dependency('threads')
 
-# In OpenBSD, rapidjson header fles are installed in
-# /usr/local/include, not in /usr/include. Consequently, we need
-# deps_libpistache in our dependencies, not just pistache_dep
-#
-# In particular, for rapidjson/prettywriter.h in rest_description.cc
-
 foreach example_name : pistache_example_files
-	executable('run'+example_name, example_name+'.cc', dependencies: [pistache_dep, threads_dep, deps_libpistache])
+	executable('run'+example_name, example_name+'.cc', dependencies: [pistache_dep, threads_dep])
 endforeach