Remove user directory for adding files.

Experience shows it was not a very useful feature.

Makefile

@@ -190,7 +190,6 @@ $(OUT)/sources.tape: $(OUT)/stamp/touch $(ITSTAR) $(OUT)/stamp/pdp10 $(OUT)/sysh
 	$(ITSTAR) -rf $@ -C doc $(DOC)
 	$(ITSTAR) -rf $@ -C bin $(BIN)
 	$(ITSTAR) -rf $@ -C $(OUT) syshst
-	-cd user; ../$(ITSTAR) -rf ../$@ *
 
 $(OUT)/salv.tape: $(WRITETAPE) $(RAM) $(NSALV)
 	$(MKDIR) $(OUT)

README.md

@@ -84,11 +84,6 @@ a simulated GT40 graphics terminal, type `./start gt40`.  If you run
 the KA10 emulator, you can use the Knight TV raster display by typing
 `./start tv11 tvcon`.  On a TV, type <kbd>F1</kbd> instead of <kbd>CTRL</kbd><kbd>Z</kbd>.
 
-To install your personal user files, add a subdirectory under `user`
-with your files inside.  They will be copied to ITS.  The directory
-name is limited to six characters, and file names must have two
-six-character parts separated by a period.
-
 Here is an overview of the repository:
 - bin - PDP-10 binary files necessary to bootstrap the system.
 - build - build scripts.