[Sage] Fix bug with unsuitable space removing in sage output

BUG: 413483
FIXED-IN: 19.12

src/backends/sage/sageexpression.cpp

@@ -145,7 +145,6 @@ void SageExpression::parseOutput(const QString& text)
         }
         else
         {
-            m_outputCache=m_outputCache.trimmed();
             evalFinished();
         }
     }