Merge pull request #4775 from NVolcz/patch-2

Removed debug lines from example unittest

Author: andralex

std/algorithm/iteration.d

@@ -2425,8 +2425,6 @@ if (isInputRange!RoR && isInputRange!(ElementType!RoR))
     import std.range.interfaces : inputRangeObject;
     import std.range : repeat;
 
-    debug(std_algorithm) scope(success)
-        writeln("unittest @", __FILE__, ":", __LINE__, " done.");
     static assert(isInputRange!(typeof(joiner([""]))));
     static assert(isForwardRange!(typeof(joiner([""]))));
     assert(equal(joiner([""]), ""));