Remove some old parts of the php

Since ba138a3 the generate-phpt library
has been unbundled from the php-src. This patch cleans two remaining
parts.

Author: petk

.gitignore

@@ -208,5 +208,4 @@ ext/sqlite3/tests/phpsql*
 # Special cases to invert previous ignore rules
 !ext/fileinfo/libmagic.patch
 !ext/mbstring/oniguruma.patch
-!scripts/dev/generate-phpt/tests/*.php
 !ext/pcre/pcre2lib/config.h