Remove pgindent ecpg exclusion pattern

Report by Tom Lane

Author: bmomjian

src/tools/pgindent/exclude_file_patterns

@@ -2,6 +2,4 @@
 /s_lock\.h$
 /ecpg/test/expected/
 /snowball/libstemmer/
-/ecpg/include/(sqlda|sqltypes)\.h$
-/ecpg/include/preproc/struct\.h$
 /pl/plperl/ppport\.h$