fix format issues

Author: MohamedElgammal

vpr/src/place/place_util.cpp

@@ -384,6 +384,3 @@ void alloc_and_load_legal_placement_locations(std::vector<std::vector<std::vecto
     //avoid any memory waste
     legal_pos.shrink_to_fit();
 }
-
-
-

vpr/src/place/place_util.h

@@ -205,6 +205,5 @@ int get_initial_move_lim(const t_placer_opts& placer_opts, const t_annealing_sch
 ///@brief Returns the standard deviation of data set x.
 double get_std_dev(int n, double sum_x_squared, double av_x);
 
-
 ///@brief Builds legal_pos structure
 void alloc_and_load_legal_placement_locations(std::vector<std::vector<std::vector<t_pl_loc>>>& legal_pos);