diff --git a/slides/ldap/ldap.pdf b/slides/ldap/ldap.pdf
deleted file mode 100644
index 6a48442..0000000
Binary files a/slides/ldap/ldap.pdf and /dev/null differ
diff --git a/slides/sql/sql.pdf b/slides/sql/sql.pdf
deleted file mode 100644
index 15e68f6..0000000
Binary files a/slides/sql/sql.pdf and /dev/null differ