tree-wide: remove consecutive duplicate words in comments

src/basic/escape.c

@@ -333,7 +333,7 @@ int cunescape_length_with_prefix(const char *s, size_t length, const char *prefi
                 assert(remaining > 0);
 
                 if (*f != '\\') {
-                        /* A literal literal, copy verbatim */
+                        /* A literal, copy verbatim */
                         *(t++) = *f;
                         continue;
                 }

src/basic/util.c

@@ -467,7 +467,7 @@ bool in_initrd(void) {
          * 2. the root file system must be a memory file system
          *
          * The second check is extra paranoia, since misdetecting an
-         * initrd can have bad bad consequences due the initrd
+         * initrd can have bad consequences due the initrd
          * emptying when transititioning to the main systemd.
          */