Clean up constant qstr declarations now that charlen isn't needed

py/qstr.c

@@ -84,8 +84,8 @@ const static qstr_pool_t const_pool = {
     10,                 // set so that the first dynamically allocated pool is twice this size; must be <= the len (just below)
     MP_QSTR_number_of,  // corresponds to number of strings in array just below
     {
-        (const byte*) "\0\0\0\0\0\0", // invalid/no qstr has empty data
-        (const byte*) "\0\0\0\0\0\0", // empty qstr
+        (const byte*) "\0\0\0\0", // invalid/no qstr has empty data
+        (const byte*) "\0\0\0\0", // empty qstr
 #define Q(id, str) str,
 #include "genhdr/qstrdefs.generated.h"
 #undef Q