[Mesh] Minor code update

Removal of unnecessary comparison.
`QThread::idealThreadCount()` returns the ideal number of threads that the process can run in parallel or 1 if it fails to determine it.

src/Mod/Mesh/App/Core/Builder.cpp

@@ -336,7 +336,7 @@ void MeshFastBuilder::Finish ()
     }
 
     //std::sort(verts.begin(), verts.end());
-    int threads = std::max(1, QThread::idealThreadCount());
+    int threads = QThread::idealThreadCount();
     MeshCore::parallel_sort(verts.begin(), verts.end(), std::less<Private::Vertex>(), threads);
 
     QVector<FacetIndex> indices(ulCtPts);

src/Mod/Mesh/App/Core/Evaluation.cpp

@@ -966,7 +966,7 @@ void MeshKernel::RebuildNeighbours (FacetIndex index)
 
     // sort the edges
     //std::sort(edges.begin(), edges.end(), Edge_Less());
-    int threads = std::max(1, QThread::idealThreadCount());
+    int threads = QThread::idealThreadCount();
     MeshCore::parallel_sort(edges.begin(), edges.end(), Edge_Less(), threads);
 
     PointIndex p0 = POINT_INDEX_MAX, p1 = POINT_INDEX_MAX;