refactor: Remove comment from Dockerfile

Dockerfile

@@ -16,9 +16,6 @@ ARG DEBUG
 # Set environment variable based on the build argument
 ENV DEBUG=${DEBUG}
 
-# if you located in China, you can use aliyun mirror to speed up
-#RUN sed -i 's@deb.debian.org@mirrors.ustc.edu.cn@g' /etc/apt/sources.list.d/debian.sources
-
 # Install system dependencies
 RUN apt-get update && apt-get install -y \
     gcc \

cognee/infrastructure/databases/vector/embeddings/LiteLLMEmbeddingEngine.py

@@ -134,9 +134,7 @@ class LiteLLMEmbeddingEngine(EmbeddingEngine):
                         litellm.aembedding(
                             model=self.model,
                             input=text,
-                            api_key=self.api_key
-                            if self.api_key and self.api_key.strip() != ""
-                            else "EMPTY",
+                            api_key=self.api_key,
                             api_base=self.endpoint,
                             api_version=self.api_version,
                         ),