* src/storage_encryption_conf.c: Remove superflous include for 'base64.h'

diff --git a/src/storage_encryption_conf.c b/src/storage_encryption_conf.c
index 69cfaf1..df4b2e1 100644
--- a/src/storage_encryption_conf.c
+++ b/src/storage_encryption_conf.c
@@ -24,7 +24,6 @@
 
 #include "internal.h"
 
-#include "base64.h"
 #include "buf.h"
 #include "memory.h"
 #include "storage_conf.h"