Remove the unneeded escaping of '[' and ']' characters in test_class_help

As these characters don't need to be escaped for strings
wrapped inside {} braces, we can remove the unneeded backslashes.

gdb/testsuite/ChangeLog:

	* lib/gdb.exp (test_class_help): Remove the unneeded escaping of
	'[' and ']' characters.

1 files changed, 5 insertions, 3 deletions

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index c0e0cb1..381297a 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -4694,11 +4694,13 @@ proc help_test_raw { gdb_command expected_lines args } {
 # are regular expressions that should match the beginning of output,
 # before the list of commands in that class.  The presence of 
 # command list and standard epilogue will be tested automatically.
+# Notice that the '[' and ']' characters don't need to be escaped for strings
+# wrapped in {} braces.
 proc test_class_help { command_class expected_initial_lines args } {
     set l_stock_body {
-        "List of commands\:.*\[\r\n\]+"
-        "Type \"help\" followed by command name for full documentation\.\[\r\n\]+"
-        "Type \"apropos word\" to search for commands related to \"word\"\.[\r\n\]+"
+        "List of commands\:.*[\r\n]+"
+        "Type \"help\" followed by command name for full documentation\.[\r\n]+"
+        "Type \"apropos word\" to search for commands related to \"word\"\.[\r\n]+"
         "Command name abbreviations are allowed if unambiguous\." 
     }
     set l_entire_body [concat $expected_initial_lines $l_stock_body]