[gegl] levels: don't limit value-range of props

[Ell <ell src gnome org>]

commit 68478b7ecd3c3e9c35a268c66efcca5c80639828
Author: Ell <ell_se yahoo com>
Date:   Tue Jun 2 19:54:57 2020 +0300

    levels: don't limit value-range of props
    
    ... but keep the ui-range to [0,1].

 operations/common/levels.c | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/operations/common/levels.c b/operations/common/levels.c
index 134c44a22..e86802f5c 100644
--- a/operations/common/levels.c
+++ b/operations/common/levels.c
@@ -26,22 +26,18 @@
 
 property_double (in_low, _("Low input"), 0.0)
     description ( _("Input luminance level to become lowest output"))
-    value_range (-1.0, 4.0)
     ui_range    (0.0, 1.0)
 
 property_double (in_high, _("High input"), 1.0)
     description (_("Input luminance level to become white"))
-    value_range (-1.0, 4.0)
     ui_range    (0.0, 1.0)
 
 property_double (out_low, _("Low output"), 0.0)
     description (_("Lowest luminance level in output"))
-    value_range (-1.0, 4.0)
     ui_range    (0.0, 1.0)
 
 property_double (out_high, _("High output"), 1.0)
     description (_("Highest luminance level in output"))
-    value_range (-1.0, 4.0)
     ui_range    (0.0, 1.0)
 
 #else