Tools: stop build_parameters.sh copying non-existent files

We stopped generating these files some time ago

Tools/scripts/build_parameters.sh

@@ -9,9 +9,7 @@ PARAMS_DIR="../buildlogs/Parameters"
 # work from either APM directory or above
 [ -d ArduPlane ] || cd APM
 
-# copy combined parameters files away:
 /bin/mkdir -p "$PARAMS_DIR"
-/bin/cp Parameters.wiki Parameters.html *.pdef.xml "$PARAMS_DIR"
 
 generate_parameters() {
     VEHICLE="$1"