Remove thin space

Generally qbt doesn't put a space before percentage symbol.
This change makes the UI elements consistent.

src/base/unicodestrings.h

@@ -37,7 +37,6 @@
 inline const QString C_COPYRIGHT = u"©"_s;
 inline const QString C_INEQUALITY = u"≠"_s;
 inline const QString C_INFINITY = u"∞"_s;
-inline const QString C_THIN_SPACE = u" "_s;
 inline const QString C_UTP = u"μTP"_s;
 
 inline const QString C_LOCALE_ARABIC = u"عربي"_s;

src/gui/torrentcontentmodelitem.cpp

@@ -137,7 +137,7 @@ QString TorrentContentModelItem::displayData(const int column) const
             const QString value = (avail >= 1)
                                   ? u"100"_s
                                   : Utils::String::fromDouble((avail * 100), 1);
-            return (value + C_THIN_SPACE + u'%');
+            return (value + u'%');
         }
     default:
         Q_ASSERT(false);