Update modulemd for ruby:3.1 stream.

Migrate to modulemd-packager v3.
We only need one context.
Remove rubygem-abrt from the module as it is not longer present in C9S.
Clean up the RPM API section.

We do not need `sources` file for modules. Delete it.

Resolves: rhbz#2063773

ruby.yaml

@@ -1,21 +1,19 @@
 ---
-document: modulemd
-version: 2
+document: modulemd-packager
+version: 3
 data:
-  stream: 3.0
+  name: ruby
+  stream: 3.1
   summary: An interpreter of object-oriented scripting language
   description: >-
     Ruby is the interpreted scripting language for quick and easy object-oriented
     programming.  It has many features to process text files and to do system management
     tasks (as in Perl).  It is simple, straight-forward, and extensible.
   license:
-    module:
     - MIT
-  dependencies:
-  - buildrequires:
-      platform: [el8]
-    requires:
-      platform: [el8]
+  configurations:
+  - context: '9'
+    platform: el9
   references:
     community: http://ruby-lang.org/
     documentation: https://www.ruby-lang.org/en/documentation/
@@ -27,10 +25,10 @@ data:
   api:
     rpms:
     - ruby
+    - ruby-bundled-gems
     - ruby-default-gems
     - ruby-devel
     - ruby-libs
-    - rubygem-abrt
     - rubygem-bigdecimal
     - rubygem-bundler
     - rubygem-io-console
@@ -38,34 +36,31 @@ data:
     - rubygem-json
     - rubygem-minitest
     - rubygem-mysql2
-    - rubygem-net-telnet
-    - rubygem-openssl
     - rubygem-pg
     - rubygem-power_assert
     - rubygem-psych
     - rubygem-rake
+    - rubygem-rbs
+    - rubygem-rexml
+    - rubygem-rss
     - rubygem-rdoc
     - rubygem-test-unit
-    - rubygem-xmlrpc
+    - rubygem-typeprof
     - rubygems
     - rubygems-devel
   components:
     rpms:
       ruby:
         rationale: An interpreter of object-oriented scripting language
-        ref: stream-ruby-3.0-rhel-8.7.0
+        ref: stream-ruby-3.1-rhel-9.1.0
         buildorder: 101
         multilib: [x86_64]
-      rubygem-abrt:
-        rationale: ABRT support for Ruby
-        ref: stream-ruby-3.0-rhel-8.7.0
-        buildorder: 102
       rubygem-mysql2:
         rationale: A simple, fast Mysql library for Ruby, binding to libmysql
-        ref: stream-ruby-3.0-rhel-8.7.0
+        ref: stream-ruby-3.1-rhel-9.1.0
         buildorder: 102
       rubygem-pg:
         rationale: A Ruby interface to the PostgreSQL RDBMS
-        ref: stream-ruby-3.0-rhel-8.7.0
+        ref: stream-ruby-3.1-rhel-9.1.0
         buildorder: 102
 ...