scripted-diff: remove duplicate categories from LogPrint output

-BEGIN VERIFY SCRIPT-
s() { git grep -l "$1" src | xargs sed -i "s/$1/$2/g"; }
s 'BCLog::TOR, "tor: '       'BCLog::TOR, "'
s 'BCLog::I2P, "I2P: '       'BCLog::I2P, "'
s 'BCLog::NET, "net: '       'BCLog::NET, "'
s 'BCLog::ZMQ, "zmq: '       'BCLog::ZMQ, "'
s 'BCLog::PRUNE, "Prune: '   'BCLog::PRUNE, "'
-END VERIFY SCRIPT-

src/i2p.cpp

@@ -242,7 +242,7 @@ std::string Session::Reply::Get(const std::string& key) const
 template <typename... Args>
 void Session::Log(const std::string& fmt, const Args&... args) const
 {
-    LogPrint(BCLog::I2P, "I2P: %s\n", tfm::format(fmt, args...));
+    LogPrint(BCLog::I2P, "%s\n", tfm::format(fmt, args...));
 }
 
 Session::Reply Session::SendRequestAndGetReply(const Sock& sock,