Temporarily disable the safe part of _safe_poll_fd()

It seems to be causing something to spin. Should be replaced with a different
design anyway.

src/LibSSH.jl

@@ -162,16 +162,19 @@ end
 # versions between the loop condition evaluation and this line, so we wrap
 # poll_fd() in a try-catch in case the bind (and thus the file descriptor) has
 # been closed in the meantime, which would cause poll_fd() to throw an IOError:
-# https://github.com/JuliaLang/julia/pull/52377
+# https://github.com/JuliaLang/julia/pull/52377.
+#
+# Note: the whole polling design is bad. We should only have one task polling
+# the session and waking up other listeners.
 function _safe_poll_fd(args...; kwargs...)
     result = nothing
-    try
+    # try
         result = FileWatching.poll_fd(args...; kwargs...)
-    catch ex
-        if !(ex isa Base.IOError)
-            rethrow()
-        end
-    end
+    # catch ex
+    #     if !(ex isa Base.IOError)
+    #         rethrow()
+    #     end
+    # end
 
     return result
 end