chore: Remove unused embedding mix task

This has been replaced with a similar task within the `audio_tagger`
package.

lib/mix/tasks/embedding.ex

@@ -1,21 +0,0 @@
-defmodule Mix.Tasks.Embedding do
-  @moduledoc "Generate embeddings from ICD10 codes"
-
-  use Mix.Task
-
-  @shortdoc "Generates icd10_vector_tensors.bin in system tmp"
-  def run(_) do
-    Mix.Task.run("app.start")
-
-    tmpfile = Path.join(System.tmp_dir(), "icd10_vector_tensors.bin")
-
-    if File.exists?(tmpfile) do
-      IO.puts("Found pre-calculated ICD-10 vector embeddings. Skipping embedding.")
-    else
-      AudioTagger.SampleData.icd10_codes()
-      |> AudioTagger.Classifier.SemanticSearch.precalculate_label_vectors(tmpfile)
-
-      IO.inspect(tmpfile, label: "Wrote vector embeddings")
-    end
-  end
-end