diff --git a/package/samplers/auto_sampler/README.md b/package/samplers/auto_sampler/README.md
index 866fccc1..2bd91607 100644
--- a/package/samplers/auto_sampler/README.md
+++ b/package/samplers/auto_sampler/README.md
@@ -11,8 +11,6 @@ license: MIT License
 
 This package automatically selects an appropriate sampler for the provided search space based on the developers' recommendation.
 
-![Conceptual Visualization](images/thumbnail.png "Conceptual Visualization")
-
 ## Class or Function Names
 
 - AutoSampler
diff --git a/package/samplers/auto_sampler/images/thumbnail.png b/package/samplers/auto_sampler/images/thumbnail.png
deleted file mode 100644
index 83a4fe56..00000000
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