remove unused params function

selfdrive/boardd/panda.cc

@@ -279,7 +279,6 @@ const char* Panda::get_serial(){
 
   delete[] serial_buf;
   return NULL;
-
 }
 
 void Panda::set_power_saving(bool power_saving){

selfdrive/common/params.cc

@@ -237,10 +237,6 @@ cleanup:
 }
 
 int Params::delete_db_value(std::string key) {
-  return delete_db_value(key.c_str());
-}
-
-int Params::delete_db_value(const char* key) {
   int lock_fd = -1;
   int result;
   std::string path;
@@ -256,7 +252,7 @@ int Params::delete_db_value(const char* key) {
   }
 
   // Delete value.
-  path = params_path + "/d/" + std::string(key);
+  path = params_path + "/d/" + key;
   result = remove(path.c_str());
   if (result != 0) {
     result = ERR_NO_VALUE;

selfdrive/common/params.h

@@ -33,7 +33,6 @@ public:
   // Delete a value from the params database.
   // Inputs are the same as read_db_value, without value and value_sz.
   int delete_db_value(std::string key);
-  int delete_db_value(const char* key);
 
   // Reads a value from the params database, blocking until successful.
   // Inputs are the same as read_db_value.