Disable tests who fail because they have to run as root.

--- libusb-0.1.12/tests/Makefile.in	2006-03-04 03:54:06.000000000 +0100
+++ libusb-0.1.12/tests/Makefile.in	2017-07-13 16:17:45.201728019 +0200
@@ -255,8 +255,8 @@
 hub_strings_LDADD = $(top_builddir)/libusbpp.la @OSLIBS@
 driver_name_SOURCES = driver_name.cpp
 driver_name_LDADD = $(top_builddir)/libusbpp.la @OSLIBS@
-TESTS = testlibusb descriptor_test id_test find_hubs find_mice \
-		get_resolution hub_strings $(OS_SPECIFIC)
+TESTS = testlibusb descriptor_test id_test find_hubs find_mice
+		#get_resolution hub_strings $(OS_SPECIFIC)
 
 XFAIL_TESTS = get_resolution hub_strings $(OS_SPECIFIC_XFAIL)
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<tr><td><span title='2018-03-01 22:21:02 +0100'>2018-03-01</span></td><td><a href='/guix/commit/gnu/packages/sdcc.scm?id=738aa0ca1d1b86286cf8f57620a50c4b093031b8'>gnu: sdcc: Fix typo in description.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2018-03-01 22:21:02 +0100'>2018-03-01</span></td><td><a href='/guix/commit/gnu/packages/sdcc.scm?id=1ff14bf2cdc698e1aa3418a3bbea023e80075e50'>gnu: sdcc: Update to 3.7.0.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-10-30 01:03:09 +0200'>2016-10-30</span></td><td><a href='/guix/commit/gnu/packages/sdcc.scm?id=225d6c049ea36724f80db44f0c4f73b0b740978d'>gnu: sdcc: Enable ucsim.</a><span class='msg-avail'>...</span></td><td>David Craven</td></tr>