[master] Fixed build issue when none of the SQL backends are enabled.

src/lib/dhcpsrv/testutils/Makefile.am

@@ -15,17 +15,7 @@ noinst_LTLIBRARIES = libdhcpsrvtest.la
 libdhcpsrvtest_la_SOURCES  = config_result_check.cc config_result_check.h
 libdhcpsrvtest_la_SOURCES += dhcp4o6_test_ipc.cc dhcp4o6_test_ipc.h
 
-if HAVE_MYSQL
-libdhcpsrvtest_la_SOURCES += schema.cc schema.h
-else
-if HAVE_PGSQL
-libdhcpsrvtest_la_SOURCES += schema.cc schema.h
-else
-if HAVE_CQL
 libdhcpsrvtest_la_SOURCES += schema.cc schema.h
-endif
-endif
-endif
 
 if HAVE_MYSQL
 libdhcpsrvtest_la_SOURCES += mysql_schema.cc mysql_schema.h