fan-profile: drop redundant 2>/dev/null on mapping function call

map_profile_to_strategy never writes to stderr — the suppression was
silencing nothing real and would mislead a future reader.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/fan-profile.sh

@@ -38,7 +38,7 @@ fi
 
 if [ -f "$STATE_FILE" ]; then
     PROFILE=$(powerprofilesctl get 2>/dev/null)
-    MAPPED=$(map_profile_to_strategy "$PROFILE" 2>/dev/null)
+    MAPPED=$(map_profile_to_strategy "$PROFILE")
     if [ -n "$MAPPED" ]; then
         ACTIVE=$(fw-fanctrl print 2>/dev/null | awk -F"'" '/^Strategy:/{print $2}')
         [ "$ACTIVE" != "$MAPPED" ] && fw-fanctrl use "$MAPPED" >/dev/null 2>&1