wa: Remove reference to devlibs escaping methods

As part of https://github.com/ARM-software/devlib/pull/339 the escaping
method are being removed in favour of using `quote` from `pipes` so
also make reflecting changes here.

wa/commands/show.py

@@ -20,6 +20,7 @@
 
 import sys
 from subprocess import call, Popen, PIPE
+from pipes import quote
 
 from wa import Command
 from wa.framework import pluginloader
@@ -31,8 +32,6 @@ from wa.utils.doc import (strip_inlined_text, get_rst_from_plugin,
                           get_params_rst, underline)
 from wa.utils.misc import which
 
-from devlib.utils.misc import escape_double_quotes
-
 
 class ShowCommand(Command):
 
@@ -87,7 +86,7 @@ class ShowCommand(Command):
             title = '.TH {}{} 7'.format(kind, plugin_name)
             output = '\n'.join([title, body])
 
-            call('echo "{}" | man -l -'.format(escape_double_quotes(output)), shell=True)
+            call('echo {} | man -l -'.format(quote(output)), shell=True)
         else:
             print(rst_output)  # pylint: disable=superfluous-parens
 

wa/utils/misc.py

@@ -49,7 +49,6 @@ from devlib.exception import TargetError
 from devlib.utils.misc import (ABI_MAP, check_output, walk_modules,
                                ensure_directory_exists, ensure_file_directory_exists,
                                normalize, convert_new_lines, get_cpu_mask, unique,
-                               escape_quotes, escape_single_quotes, escape_double_quotes,
                                isiterable, getch, as_relative, ranges_to_list, memoized,
                                list_to_ranges, list_to_mask, mask_to_list, which,
                                to_identifier)