lfs: drop deprecated remote store config options
The last of these were removed from fb-experimental in 86884a51e9aa, and we
might as well clean this up before the freeze.
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false