[REPL] Fix a REPL test failure by removing an erroneous space in test (…

…#44972)

* [REPL] remove erroneous space in test
  Introduced by #33805 (74f2de1).
* Revert "Temporarily move the `REPL` test suite to node 1, to buy us time until we fix the underlying bugs (#44961)"
  This reverts commit 322fd70.

(cherry picked from commit fbec395)

stdlib/REPL/test/repl.jl

@@ -264,7 +264,7 @@ fake_repl(options = REPL.Options(confirm_exit=false,hascolor=true)) do stdin_wri
         write(stdin_write, ";")
         readuntil(stdout_read, "shell> ")
         Base.print_shell_escaped(stdin_write, Base.julia_cmd().exec..., special=Base.shell_special)
-        write(stdin_write, """ -e "println(\\"HI\\")\" """)
+        write(stdin_write, """ -e "println(\\"HI\\")\"""")
         readuntil(stdout_read, ")\"")
         proc_stdout_read, proc_stdout = redirect_stdout()
         get_stdout = @async read(proc_stdout_read, String)