Revert "BoardConfig: jf can do 80211 N, so let's try overriding a value that bubbles up from msm8960"

Probably unneeded, and might fix hostapd

This reverts commit b9d298b7a6ef8a06d31534e51d0f559ff53ce0c7
Merge "Revert "BoardConfig: jf can do 80211 N, so let's try overriding a value that bubbles up from msm8960"" into jb42