Don't print same file path twice in error message.

zip::exception always has  the filename in the message.

src/main.cpp

@@ -156,10 +156,7 @@ int main(int argc, char *argv[])
                         return EXIT_SUCCESS;
                     }
 
-                    cerr << translate("ERROR: ") << e.what();
-                    cerr << format(translate(" (while searching {0:s})").str(),
-                                   filepath)
-                         << '\n';
+                    cerr << translate("ERROR: ") << e.what() << '\n';
                     return EXIT_FAILURE;
                 }
                 catch (const std::ifstream::failure &e)