terminfo: remove km/smm/rmm

By default, foot prefixes Alt-<key> combos with ESC, instead of
setting the 8:th “meta” bit. In this mode, smm/rmm has no effect.

This mode _can_ be disabled, by resetting private mode 1036. However,
the terminfo should reflect the terminal’s *default* behavior.

foot.info

@@ -17,7 +17,6 @@ foot+base|foot base fragment,
     bw,
     ccc,
     hs,
-    km,
     mir,
     msgr,
     npc,
@@ -250,7 +249,6 @@ foot+base|foot base fragment,
     rmcup=\E[?1049l\E[23;0;0t,
     rmir=\E[4l,
     rmkx=\E[?1l\E>,
-    rmm=\E[?1034l,
     rmso=\E[27m,
     rmul=\E[24m,
     rmxx=\E[29m,
@@ -267,7 +265,6 @@ foot+base|foot base fragment,
     smcup=\E[?1049h\E[22;0;0t,
     smir=\E[4h,
     smkx=\E[?1h\E=,
-    smm=\E[?1034h,
     smso=\E[7m,
     smul=\E[4m,
     smxx=\E[9m,