minor - remove deprecated headers

Makefile

@@ -637,9 +637,6 @@ install : $(libceed) $(OBJDIR)/ceed.pc
 	$(INSTALL_DATA) $(OBJDIR)/ceed.pc "$(DESTDIR)$(pkgconfigdir)/"
 	$(INSTALL_DATA) include/ceed.h "$(DESTDIR)$(includedir)/"
 	$(INSTALL_DATA) include/ceedf.h "$(DESTDIR)$(includedir)/"
-	$(INSTALL_DATA) include/ceed-backend.h "$(DESTDIR)$(includedir)/"
-	$(INSTALL_DATA) include/ceed-hash.h "$(DESTDIR)$(includedir)/"
-	$(INSTALL_DATA) include/ceed-khash.h "$(DESTDIR)$(includedir)/"
 
 .PHONY : all cln clean doxygen doc lib install par print test tst prove prv prove-all junit examples style style-c style-py tidy info info-backends info-backends-all
 

doc/sphinx/source/releasenotes.md

@@ -15,6 +15,7 @@ for each release of libCEED.
 - Add {c:func} `CeedOperatorLinearAssembleQFunctionBuildOrUpdate` to reduce object creation overhead in assembly of CeedOperator preconditioning ingredients.
 - Promote {c:func} `CeedOperatorCheckReady`to the public API to facilitate interactive interfaces.
 - Warning added when compiling OCCA backend to alert users that this backend is experimental.
+- `ceed-backend.h`, `ceed-hash.h`, and `ceed-khash.h` removed. Users should use `ceed/backend.h`, `ceed/hash.h`, and `ceed/khash.h`.
 
 ### New features
 

include/ceed-hash.h

@@ -1,3 +1,3 @@
 #include <ceed/hash.h>
 
-#warning <ceed-hash.h> is deprecated and will be removed in libCEED v0.9; use <ceed/hash.h>
+#warning "<ceed-hash.h> is deprecated and will be removed in libCEED v0.9; use <ceed/hash.h>"