diff --git a/.husky/pre-push b/.husky/pre-push
index e2566670..f4a6f4a1 100755
--- a/.husky/pre-push
+++ b/.husky/pre-push
@@ -4,7 +4,7 @@
 
 echo "Fixing changed files with lint violations..."
 
-yarn prettier --write --ignore-unknown $(git diff "$(git merge-base main HEAD)" --name-only) || exit $?
+yarn prettier --write --ignore-unknown $(git diff "$(git merge-base main HEAD)" --name-only --diff-filter=d) || exit $?
 
 echo
 echo "Auditing dependencies..."
diff --git a/lib/super_diff/errors.rb b/lib/super_diff/errors.rb
index 74121e12..1ff0759a 100644
--- a/lib/super_diff/errors.rb
+++ b/lib/super_diff/errors.rb
@@ -1,9 +1,5 @@
 module SuperDiff
   module Errors
-    autoload(
-      :NoDiffFormatterAvailableError,
-      "super_diff/errors/no_diff_formatter_available_error"
-    )
     autoload(
       :NoDifferAvailableError,
       "super_diff/errors/no_differ_available_error"
diff --git a/lib/super_diff/errors/no_diff_formatter_available_error.rb b/lib/super_diff/errors/no_diff_formatter_available_error.rb
deleted file mode 100644
index de5e6fa1..00000000
--- a/lib/super_diff/errors/no_diff_formatter_available_error.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-module SuperDiff
-  module Errors
-    class NoDiffFormatterAvailableError < StandardError
-      def self.create(operation_tree)
-        allocate.tap do |error|
-          error.operation_tree = operation_tree
-          error.__send__(:initialize)
-        end
-      end
-
-      attr_accessor :operation_tree
-
-      def initialize
-        super(<<-MESSAGE)
-There is no diff formatter available to handle an operation tree object of
-#{operation_tree.class}.
-        MESSAGE
-      end
-    end
-  end
-end
diff --git a/lib/super_diff/errors/no_operational_sequencer_available_error.rb b/lib/super_diff/errors/no_operational_sequencer_available_error.rb
deleted file mode 100644
index 2c8f193f..00000000
--- a/lib/super_diff/errors/no_operational_sequencer_available_error.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-module SuperDiff
-  module Errors
-    class NoOperationalSequencerAvailableError < StandardError
-      def self.create(expected, actual)
-        allocate.tap do |error|
-          error.expected = expected
-          error.actual = actual
-          error.__send__(:initialize)
-        end
-      end
-
-      attr_accessor :expected, :actual
-
-      def initialize
-        super(<<-MESSAGE)
-There is no operational sequencer available to handle an "expected" value of
-type #{expected.class} and an "actual" value of type #{actual.class}.
-        MESSAGE
-      end
-    end
-  end
-end