Revert "Ignore the generated apps/progs.h"

This reverts commit 91056e72693b4ee8cb5339d9091871ffc3b6f776.

Reviewed-by: Rich Salz <rsalz@openssl.org>

.gitignore

diff --git a/.gitignore b/.gitignore
index 05127dd..ab9c380 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,7 +41,6 @@
 
 
 # Auto generated headers
-/apps/progs.h
 /crypto/buildinf.h
 /crypto/include/internal/*_conf.h
 /openssl/include/opensslconf.h