feat: Remove all JS related code from this codebase (#1) #4

Job	Run time
build (3.10, windows-latest, 0)	9m 6s
build (3.11, ubuntu-latest, 0)	5m 10s
build (3.13, windows-latest, 0)	9m 25s
build (3.12, ubuntu-latest, 0)	5m 28s
adk-py (3.11, windows-latest) / test	1m 14s
build (3.13, ubuntu-latest, 0)	5m 31s
build (3.13, windows-latest, 1)	14m 15s
build (3.12, ubuntu-latest, 1)	8m 11s
build (3.11, ubuntu-latest, 1)	7m 49s
build (3.10, ubuntu-latest, 0)	5m 16s
build (3.12, windows-latest, 0)	8m 57s
build (3.10, windows-latest, 1)	11m 29s
build (3.10, ubuntu-latest, 1)	8m 26s
build (3.11, windows-latest, 0)	9m 37s
adk-py (3.10, ubuntu-latest) / test	25s
adk-py (3.12, ubuntu-latest) / test	28s
adk-py (3.10, windows-latest) / test	1m 4s
build (3.11, windows-latest, 1)	12m 19s
build (3.12, windows-latest, 1)	11m 48s
langchain-py (3.11, windows-latest) / test	58s
langchain-py (3.13, ubuntu-latest) / test	16s
adk-py (3.11, ubuntu-latest) / test	26s
langchain-py (3.12, windows-latest) / test	44s
build (3.13, ubuntu-latest, 1)	7m 39s
langchain-py (3.11, ubuntu-latest) / test	19s
langchain-py (3.13, windows-latest) / test	44s
langchain-py (3.10, ubuntu-latest) / test	15s
langchain-py (3.10, windows-latest) / test	46s
langchain-py (3.12, ubuntu-latest) / test	15s
adk-py (3.12, windows-latest) / test	1m 7s
upload-wheel	16s
	2h 29m 43s

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