Added remove_texts method on qvrant vectorsearch (#510)

lib/langchain/vectorsearch/qdrant.rb

@@ -64,6 +64,16 @@ def update_texts(texts:, ids:)
       add_texts(texts: texts, ids: ids)
     end
 
+    # Remove a list of texts from the index
+    # @param ids [Array<Integer>] The ids to remove
+    # @return [Hash] The response from the server
+    def remove_texts(ids:)
+      client.points.delete(
+        collection_name: index_name,
+        points: ids
+      )
+    end
+
     # Get the default schema
     # @return [Hash] The response from the server
     def get_default_schema

spec/langchain/vectorsearch/qdrant_spec.rb

@@ -101,6 +101,16 @@
     end
   end
 
+  describe "remove_texts" do
+    before do
+      allow(subject.client).to receive_message_chain(:points, :delete).and_return(true)
+    end
+
+    it "removes texts" do
+      expect(subject.remove_texts(ids: [1])).to eq(true)
+    end
+  end
+
   describe "#similarity_search_by_vector" do
     before do
       allow(subject.client).to receive_message_chain(:points, :search).and_return(