remove_keywords_from_negative_list

Remove keywords from a single existing Google Ads negative keyword list, matched by text.

                PURPOSE:
                Drop keywords that no longer belong in a negative keyword list (e.g. a search
                term that turned out to convert after all, or an over-eager exclusion). The
                tool fetches the list internally, finds entries whose text matches what you
                pass, and removes every match.

                MATCHING:
                - Comparison is case-sensitive and exact (whole-text equality).
                - If the same text appears under multiple match types (e.g. "free" as PHRASE
                  AND as EXACT), all of them are removed.
                - Inputs that don't match anything are reported back in 'notFound' without
                  failing the call.

                WHEN TO USE:
                - Undo a previous add_keywords_to_negative_lists mistake
                - Clean up a list during the day-to-day review loop
                - For full-list wipe use the platform's deleteAll endpoint instead
                  (not currently wrapped here)

                NOT FOR:
                - Detaching the list from a campaign (use remove_keywords_from_campaign).
                - Deleting the list itself.

                COMMON USE CASES:
                1. Remove a single keyword:
                   remove_keywords_from_negative_list(
                     listId=43256533,
                     keywords=["free download"],
                   )

                2. Remove several at once:
                   remove_keywords_from_negative_list(
                     listId=43256533,
                     keywords=["competitor a", "tutorial", "wiki"],
                   )

                PARAMETERS:
                - listId (integer, required): negative keyword list id
                  (from list_negative_keywords_list).
                - keywords (array of strings, required, min 1): exact text(s) to remove.

                RESPONSE FORMAT:
                {
                  "listId": 43256533,
                  "removed": [{"text": "free download", "keywordMatchType": "PHRASE", "resourceName": "..."}, ...],
                  "notFound": ["wiki"]
                }

                CHANNEL SCOPE:
                BOTH search channels are supported: pass channel=MICROSOFT_ADS for Microsoft
                Ads (Bing) and channel=GOOGLE_ADS for Google. The two channels hold SEPARATE
                lists, so never substitute one channel for the other to get "close enough"
                results.