Do not hardcode FTL PID file path

Signed-off-by: Orazio <22700499+orazioedoardo@users.noreply.github.com>

automated install/basic-install.sh

@@ -83,7 +83,6 @@ PI_HOLE_INSTALL_DIR="/opt/pihole"
 PI_HOLE_CONFIG_DIR="/etc/pihole"
 PI_HOLE_BIN_DIR="/usr/local/bin"
 FTL_CONFIG_FILE="${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf"
-FTL_PID_FILE="/run/pihole/FTL.pid"
 if [ -z "$useUpdateVars" ]; then
     useUpdateVars=false
 fi
@@ -1852,9 +1851,6 @@ finalExports() {
     # Set the privacy level
     addOrEditKeyValPair "${FTL_CONFIG_FILE}" "PRIVACYLEVEL" "${PRIVACY_LEVEL}"
 
-    # Set the PID file path
-    addOrEditKeyValPair "${FTL_CONFIG_FILE}" "PIDFILE" "${FTL_PID_FILE}"
-
     # Bring in the current settings and the functions to manipulate them
     source "${setupVars}"
     # shellcheck source=advanced/Scripts/webpage.sh