tools: drop duplicate source_text imports left by the merge

tools/qualify-adreno-ib-command.py

@@ -40,8 +40,6 @@ import subprocess
 import sys
 from source_text import source_files
 
-from source_text import source_files
-
 ROOT = Path(__file__).resolve().parents[1]
 Q1N1 = ROOT.parent / 'q1n1' / 'tools'
 PLANS = ROOT / 'build' / 'adreno-pipeline-compiler-20260927'

tools/test-i2c-input.py

@@ -45,7 +45,6 @@ import tempfile
 import types
 import unittest
 from dataclasses import fields, replace
-from source_text import read_source
 
 ROOT = Path(__file__).resolve().parents[1]
 sys.path.insert(0, str(ROOT / 'probes'))