using pragma once to replace old school ifdef

src/output/ods/comparspecificspectrasheet.h

@@ -28,8 +28,7 @@
  *implementation
  ******************************************************************************/
 
-#ifndef COMPARSPECIFICSPECTRASHEET_H
-#define COMPARSPECIFICSPECTRASHEET_H
+#pragma once
 #include "comparbasesheet.h"
 
 class ComparSpecificSpectraSheet : public ComparBaseSheet
@@ -60,4 +59,3 @@ class ComparSpecificSequenceSheet : public ComparBaseSheet
                                 const Label *p_label = nullptr) override;
 };
 
-#endif // COMPARSPECIFICSPECTRASHEET_H

src/output/ods/comparspectrasheet.h

@@ -28,9 +28,7 @@
  *implementation
  ******************************************************************************/
 
-#ifndef COMPARSPECTRASHEET_H
-#define COMPARSPECTRASHEET_H
-
+#pragma once
 #include "comparbasesheet.h"
 
 class ComparSpectraSheet : public ComparBaseSheet
@@ -106,5 +104,3 @@ class ComparNsafSheet : public ComparBaseSheet
   private:
   std::map<QString, pappso::pappso_double> _map_proto_nsaf_sum_by_msrun;
 };
-
-#endif // COMPARSPECTRASHEET_H