porting: Don't include logcfg in ports

logcfg is not used in porting anymore.
diff --git a/porting/update_generated_files.sh b/porting/update_generated_files.sh
index 6309ed2..006498e 100755
--- a/porting/update_generated_files.sh
+++ b/porting/update_generated_files.sh
@@ -33,6 +33,8 @@
 for target in "${!targets[@]}"; do
     echo "Updating target $target"
     newt build "@apache-mynewt-nimble/porting/targets/$target" > /dev/null 2>&1
+    # logcfg is not used in ports
+    rm -rf "bin/@apache-mynewt-nimble/porting/targets/${target}/generated/include/logcfg"
     cp "bin/@apache-mynewt-nimble/porting/targets/${target}/generated/include" "${targets[$target]}" -r
     # Remove repo version and hash MYNEWT_VALS as it doesn't make much sense to commit them and they
     # defeat the purpose of this script.