fix(docs): Remove sysctl and limits.conf recs from perf tuning

docs/advanced/performance.mdx

@@ -181,90 +181,3 @@ https://matrix.example.com {
 Consider enabling the newer **HTTP/3** protocol for inbound connections to Continuwuity. In Caddy this is allowed by default, and you'd need to expose port :443/**udp** on your firewall.
 
 HTTP/3 support is mostly beneficial for faster Client-Server connections, especially in browser-based applications like Element or Cinny. Continuwuity includes experimental _outbound_ HTTP/3 support in its Docker images, so connections between Continuwuity servers can benefit from this too.
-
-### Increasing file descriptors
-
-On many Linux systems, file descriptors are capped to `1024`, which may not be enough for Continuwuity's heavy use of network and disk resources. Consider increasing this number by editing your `limits.conf` file:
-
-```txt title=/etc/security/limits.conf
-*           soft        nofile          32768
-*           hard        nofile          65536
-```
-
-You may also need to increase your global file descriptor limit, by adding a sysctl parameter like `fs.file-max=1048576` (see [sysctl tuning section](#sysctl-tunings) for more).
-
-Restart your system and run `ulimit -Sn` and `ulimit -Hn`. Your soft and hard limits should now be updated.
-
-For Docker, these tweaks correspond to the following `ulimits` parameters:
-
-```yaml title=docker-compose.yml
-services:
-    homeserver:
-        # ...
-        ulimits:
-            nofile:
-                soft: 32768
-                hard: 65536
-```
-
-### Sysctl tunings
-
-Lastly, consider tuning kernel parameters in your `/etc/sysctl.conf` file (or for systemd distros, `/etc/sysctl.d/99-sysctl.conf`). Refer to external guides such as the [Arch Linux entry on Sysctl][arch-linux-sysctl] and the [sysctl documentation][sysctl-docs] for all possible values.
-
-<details>
-
-<summary>Example sysctl.conf</summary>
-
-This example `/etc/sysctl.conf` is used for a singleuser Continuwuity instance, hosted on an 8GB RAM machine with 4 cores. The goal here is to encourage RAM usage and increase adequate buffer for network activities, as the machine runs on a high-latency network environment.
-
-DO NOT copy-paste this directly, please consult this only as a reference example and only apply gradual changes to your system after you've understood their effects.
-
-```toml title=/etc/sysctl.conf
-# DISK & RAM
-
-## disables slow SWAP entirely
-vm.swappiness = 0
-
-## decrease kernel tendency to reclaim directory/inode caches
-vm.vfs_cache_pressure = 50
-
-## increase max file descriptors allowed
-## do this with the `nofile` increases in limits.conf
-fs.file-max=1048576
-## increase max kernel threads, can help with performance
-kernel.threads-max=100000
-
-# NETWORKING
-
-## increase all network read/write buffers to 8MB
-## helps increase network backlogs for busy connections
-net.core.rmem_max=8388608
-net.core.wmem_max=8388608
-net.core.rmem_default=8388608
-net.core.wmem_default=8388608
-
-## increase TCP-specific memories to match with above
-net.ipv4.tcp_rmem=4096 131072 8388608
-net.ipv4.tcp_wmem=4096 131072 8388608
-
-# applies TCP window scaling
-net.ipv4.tcp_window_scaling=1
-# applies SYN cookie for protection against SYN floods
-net.ipv4.tcp_syncookies=1
-
-# increase range of ports assigned to outbound requests
-# can help when there are plenty of outbound connections
-net.ipv4.ip_local_port_range = 10000 65535
-
-# enable the modern BBR congestion control algorithm
-# with fq qdisc
-net.core.default_qdisc = fq
-net.ipv4.tcp_congestion_control = bbr
-```
-
-Once you're happy, run `sysctl -p` to apply the changes.
-
-</details>
-
-[arch-linux-sysctl]: https://wiki.archlinux.org/title/Sysctl
-[sysctl-docs]: https://www.kernel.org/doc/html/latest/admin-guide/sysctl/