Removed unused suppressions

Author: eduar-hte

test/cppcheck_suppressions.txt

@@ -31,10 +31,6 @@ shiftNegative:src/utils/msc_tree.cc
 // ModSecurity v3 code...
 // 
 useInitializationList:src/utils/shared_files.h:87
-duplicateBranch:src/audit_log/audit_log.cc:226
-unreadVariable:src/request_body_processor/multipart.cc:435
-syntaxError:src/transaction.cc:62
-noConstructor:src/variables/variable.h:152
 rethrowNoCurrentException:headers/modsecurity/transaction.h:313
 rethrowNoCurrentException:src/rule_with_actions.cc:127