Remove HostName from SSH config

It is not necessary because the proxy command is what is in control here
and having HostName causes errors in Gateway about the host not being
found even though it seems to work in the end.

Author: code-asher

src/main/kotlin/com/coder/gateway/sdk/CoderCLIManager.kt

@@ -234,7 +234,6 @@ class CoderCLIManager @JvmOverloads constructor(
             transform = {
                 """
                 Host ${getHostName(deploymentURL, it)}
-                  HostName coder.${it.name}
                   ProxyCommand ${proxyArgs.joinToString(" ")} ${it.name}
                   ConnectTimeout 0
                   StrictHostKeyChecking no