package/supervisor: drop python-meld3 dependency

python-meld3 is not a dependency since bump to version 4.1.0 in commit
5da3e1a3e6ccd3c0bfc7e3a9ebe0b14f903af518 and
https://github.com/Supervisor/supervisor/commit/d09d843493eb77cb8c3df52e1f7e636ad0e5b4dd

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit cd5dc168e958a24cf3777d3936b3c69ce5f536b4)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/supervisor/Config.in

@@ -1,7 +1,6 @@
 config BR2_PACKAGE_SUPERVISOR
 	bool "supervisor"
 	depends on BR2_PACKAGE_PYTHON || BR2_PACKAGE_PYTHON3
-	select BR2_PACKAGE_PYTHON_MELD3
 	select BR2_PACKAGE_PYTHON_SETUPTOOLS # runtime dependency
 	help
 	  A client/server system that allows its users to control a