chore: re-enable readability-redundant-access-specifiers warning (#3685)

libtransmission/.clang-tidy

@@ -33,4 +33,3 @@ Checks: >
   -readability-identifier-length,
   -readability-magic-numbers,
   -readability-qualified-auto,
-  -readability-redundant-access-specifiers,

libtransmission/watchdir-inotify.cc

@@ -179,7 +179,6 @@ private:
         }
     }
 
-private:
     int infd_ = -1;
     int inwd_ = -1;
     struct bufferevent* event_ = nullptr;

libtransmission/web.cc

@@ -176,7 +176,6 @@ public:
         queued_tasks_cv.notify_one();
     }
 
-private:
     class Task
     {
     private:
@@ -544,7 +543,6 @@ private:
         impl->is_closed_ = true;
     }
 
-private:
     std::shared_ptr<CURLSH> const curlsh_{ curl_share_init(), curl_share_cleanup };
 
     std::mutex queued_tasks_mutex;