patch 9.0.1905: FEAT_FLOAT no longer defined

Problem:  FEAT_FLOAT no longer defined
Solution: Remove last existing FEAT_FLOAT ifdefs in
          message_test

Remove FEAT_FLOAT as that should always be true

FEAT_FLOAT has been removed in v9.0.0491 (73e28dcc6125f616cf1f2) but
unfortunately, it was forgotten to remove it from message_test.c. So
let's remove the last mentioned ifdefs which are now unused.

closes: #13106

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: dundargoc <gocdundar@gmail.com>
diff --git a/src/version.c b/src/version.c
index 76f462e..c9e2e2c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1905,
+/**/
     1904,
 /**/
     1903,