Delete lasted Ruby references (#1107)

# Description
Looks like recently closed
[PR#1102](https://github.com/delta-io/delta-rs/pull/1102) missed some
Ruby references.
This PR cleaned the rest.

Co-authored-by: Ilya Moshkov <ilya.moshkov@exosfinancial.com>

.github/CODEOWNERS

@@ -3,5 +3,4 @@ proofs/ @houqp
 python/ @wjones127 @fvaleye @rtyler @roeap @houqp
 dynamodbb_lock/ @mosyp @houqp @xianwill
 aws/delta-checkpoint/ @xianwill @houqp @rtyler @mosyp
-ruby/ @rtyler
 tlaplus/ @houqp

.github/workflows/dev_pr/labeler.yml

@@ -9,9 +9,6 @@ rust:
 binding/python:
   - python/**/*
 
-binding/ruby:
-  - ruby/**/*
-
 ci:
   - .github/**.*
 

.ignore

@@ -1,5 +1,2 @@
 # This file is used by cargo-watch
-ruby/spec
-ruby/lib
-
 .idea

README.adoc

@@ -21,7 +21,7 @@ used with data processing frameworks like
 link:https://github.com/apache/arrow-datafusion[datafusion],
 link:https://github.com/apache/arrow-datafusion/tree/master/ballista[ballista],
 link:https://github.com/pola-rs/polars[polars],
-link:https://github.com/rajasekarv/vega[vega], etc. It also provides bindings to other higher level languages such as link:https://delta-io.github.io/delta-rs/python/[Python] or Ruby.
+link:https://github.com/rajasekarv/vega[vega], etc. It also provides bindings to other higher level language link:https://delta-io.github.io/delta-rs/python/[Python].
 
 === Features
 

dev/release/update_change_log.sh

@@ -17,13 +17,11 @@ FUTURE_RELEASE="0.6.0"
 
 # only consider tags of the correct language
 if [ "$LANGUAGE" == "rust" ]; then
-	EXCLUDED_LANGUAGES_REGEX="python.*|ruby.*"
+	EXCLUDED_LANGUAGES_REGEX="python.*"
 elif [ "$LANGUAGE" == "python" ]; then
-	EXCLUDED_LANGUAGES_REGEX="ruby.*|rust.*"
-elif [ "$LANGUAGE" == "ruby" ]; then
-	EXCLUDED_LANGUAGES_REGEX="python.*|rust.*"
+	EXCLUDED_LANGUAGES_REGEX="rust.*"
 else
-  echo "Language $LANGUAGE is invalid. Should be one of Python, Ruby and Rust."
+  echo "Language $LANGUAGE is invalid. Should be one of Python and Rust."
 fi
 
 SOURCE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"