remove obsolete function

src/core/peptideevidence.h

@@ -151,12 +151,6 @@ class PeptideEvidence
 
   ValidationState getValidationState() const;
 
-  /** @brief tells if this peptide contains a protein position
-   * the position is the amino acid position on the protein sequence (starts
-   * from 0)
-   * */
-  bool containsPosition(unsigned int position) const;
-
   private:
   static std::hash<std::string> _hash_fn;
   MsRun *_msrunid_sp;