packages: remove generated distinfo file, and added to .gitignore

Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com>
diff --git a/.gitignore b/.gitignore
index 8496c5e..86033bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,6 @@
 
 # local files
 _*
+
+# freebsd ports: generated file with "make makesum" command
+packages/freebsd/ports/devel/capstone/distinfo