merged branch igorw/double-detect-unicode (PR #233)

Commits
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7caa3122 [docs] remove duplicate "detect_unicode" line in pitfalls

Discussion
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[docs] remove duplicate "detect_unicode" line in pitfalls

Not sure what happened there, I suppose some merge failed.

doc/usage.rst

@@ -589,7 +589,6 @@ the following may help.
     detect_unicode = Off
     phar.readonly = Off
     phar.require_hash = Off
-    detect_unicode = Off
 
 If you are on Suhosin you will also have to set this: