Removes unused format string insertion in launcher.c.

diff --cc PC/launcher.c
index 33dd5dab5d60fbbab603bcc36d6370a4ff86ef3d,fa0868467ff5d04cf8a1ea518fd55db3f868cf0c..1523020779068a7dbec344ed3d85deb99e5ee30a
--- 1/PC/launcher.c
--- 2/PC/launcher.c
+++ b/PC/launcher.c
@@@ -267,8 -259,8 +267,8 @@@ directory\n"
                                    ip->executable, attrs);
                          }
                          else if (find_existing_python(ip->executable)) {
 -                            debug(L"locate_pythons_for_key: %s: already \
 +                            debug(L"locate_pythons_for_key: %ls: already \
- found: %ls\n", ip->executable);
+ found\n", ip->executable);
                          }
                          else {
                              /* check the executable type. */