Remove commented-out code and placeholder comments from exchange_hankel.py#3

skilledwolf merged 2 commits intoFixes_B_fieldskilledwolf/quantumhall_matrixelements:Fixes_B_fieldfrom

copilot/sub-pr-2skilledwolf/quantumhall_matrixelements:copilot/sub-pr-2Copy head branch name to clipboard