[balsa] Fix build error on Buster

[Peter Bloomfield <peterb src gnome org>]

commit 3516da54f99d607deeeb684846faa136eef1bbe4
Author: Albrecht Dreß <albrecht dress arcor de>
Date:   Sat Jun 29 16:11:02 2019 -0400

    Fix build error on Buster
    
    One last pair of redundant declarations…
    
    * src/spell-check.c: Do not (redundantly) declare
      balsa_spell_check_class_init() and balsa_spell_check_init().

 ChangeLog         | 8 ++++++++
 src/spell-check.c | 2 --
 2 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 78a7c5dfc..4503206d3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2019-06-29  Albrecht Dreß  <albrecht dress arcor de>
+
+       Fix build error on Buster
+       One last pair of redundant declarations…
+
+       * src/spell-check.c: Do not declare
+       balsa_spell_check_class_init() and balsa_spell_check_init().
+
 2019-06-26  Peter Bloomfield  <pbloomfield bellsouth net>
 
        * libbalsa/address-book-gpe.c: streamline.
diff --git a/src/spell-check.c b/src/spell-check.c
index 037099cf8..43906e298 100644
--- a/src/spell-check.c
+++ b/src/spell-check.c
@@ -93,8 +93,6 @@ enum {
 
 
 /* initialization stuff */
-static void balsa_spell_check_class_init(BalsaSpellCheckClass *);
-static void balsa_spell_check_init(BalsaSpellCheck *);
 static void spch_set_property(GObject * object, guint prop_id,
                               const GValue * value, GParamSpec * pspec);
 static void spch_get_property(GObject * object, guint prop_id,