Revert "Set Jinja2's keep_trailing_newline=True in template_from_string."

This reverts commit 7a8eb0b670.

test/integration/roles/test_template/tasks/main.yml

@@ -63,10 +63,4 @@
   assert: 
     that: 
       - "file_result.changed != True"
-
-# VERIFY STRING TEMPLATE PRESERVES NEWLINE
-
-- name: ensure template strings preserve newline
-  assert:
-    that:
-      - "newline_no_template_string == newline_template_string"
+        

test/integration/roles/test_template/vars/main.yml

@@ -1,3 +1 @@
 templated_var: templated_var_loaded
-newline_template_string: "Hello {{ 'World' }}\n"
-newline_no_template_string: "Hello World\n"