fix(e2e-rag): drop the duplicated second half of QSL.py

[Anai-Guo]

Problem

e2e-rag/QSL.py is 295 lines, and lines 150-295 are a verbatim second copy of the
file's own body — the Apache header, the module docstring, class E2EQSL and
class E2EQSLInMemory all appear twice. Only the three imports (os, pandas,
mlperf_loadgen) are not repeated:

  1  # Copyright 2025 The MLPerf Authors. All Rights Reserved.
 16  """Query Sample Library for RAG-QnA workload. ..."""
 21  import os / import pandas as pd / import mlperf_loadgen as lg
 26  class E2EQSL:
136  class E2EQSLInMemory(E2EQSL):
---
150  # Copyright 2025 The MLPerf Authors. All Rights Reserved.   <- second copy starts
166  """Query Sample Library for RAG-QnA workload. ..."""
172  class E2EQSL:
282  class E2EQSLInMemory(E2EQSL):

Python executes both class statements, so the module-level names are rebound to the
second copy and the first 124 lines of class definitions are dead code. The
duplication has been present since the file was added in #2602.

Verification

Source lines 26-148 and 172-294 compare byte-identical, and each class pair has an
identical AST:

E2EQSL:          L26-133  vs L172-279   AST-identical=True
E2EQSLInMemory:  L136-149 vs L282-295   AST-identical=True
byte-identical source blocks: True  (124 lines each)

Fix

Remove the second copy — 146 lines deleted, 0 added, one file. After the change the
module still defines exactly E2EQSL and E2EQSLInMemory with the same bodies and the
same imports, so behaviour is unchanged:

classes after patch: ['E2EQSL', 'E2EQSLInMemory']
295 -> 149 lines

---

AI-assisted (found by a duplicate-class-definition sweep; the byte/AST comparison
above is the check I ran before submitting).

🤖 Generated with Claude Code

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❌ @Anai-Guo
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