Remove unused kmk.string (originally from micropython-lib)

LICENSE.md

@@ -1,9 +1,5 @@
-Almost all of KMK is licensed under the GPLv3. There are a couple of
-exceptions:
+Almost all of KMK is licensed under the GPLv3. The only exceptions are:
 
-- `kmk/string.py` is copied directly from
-  [micropython-lib](https://github.com/micropython/micropython-lib) and is
-  under the MIT license, copyrighted by the micropython-lib contributors
 - Hardware schematics are licensed under individual terms per schematic
 
 Files/components not listed above or containing its own copyright header in the

kmk/string.py

@@ -1,51 +0,0 @@
-# This file copied from micropython-lib
-# https://github.com/micropython/micropython-lib
-#
-# The MIT License (MIT)
-#
-# Copyright (c) 2013, 2014 micropython-lib contributors
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-
-# Some strings for ctype-style character classification
-whitespace = ' \t\n\r\v\f'
-ascii_lowercase = 'abcdefghijklmnopqrstuvwxyz'
-ascii_uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
-ascii_letters = ascii_lowercase + ascii_uppercase
-digits = '0123456789'
-hexdigits = digits + 'abcdef' + 'ABCDEF'
-octdigits = '01234567'
-punctuation = """!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"""
-printable = digits + ascii_letters + punctuation + whitespace
-
-
-def translate(s, map):
-    import io
-    sb = io.StringIO()
-    for c in s:
-        v = ord(c)
-        if v in map:
-            v = map[v]
-            if isinstance(v, int):
-                sb.write(chr(v))
-            elif v is not None:
-                sb.write(v)
-        else:
-            sb.write(c)
-    return sb.getvalue()