Remove debug output from comparison benchmark main

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: sbstndb

benchmark/comparison/comparison_main.cpp

@@ -2,16 +2,11 @@
  * Comparison benchmarks: xtensor vs raw C++
  ****************************************************************************/
 
-#include <iostream>
-
 #include <benchmark/benchmark.h>
 
 // Custom main for comparison benchmarks
 int main(int argc, char** argv)
 {
-    std::cout << "=== COMPARISON BENCHMARKS: xtensor vs raw C++ ===" << std::endl;
-    std::cout << "Each benchmark runs multiple implementations for direct comparison\n" << std::endl;
-
     benchmark::Initialize(&argc, argv);
     if (benchmark::ReportUnrecognizedArguments(argc, argv))
     {