remove outdated docs/README-gcov_for_udev

docs/README-gcov_for_udev

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-################################################
-
-Using GCC's code coverage tool, gcov, with udev
-
-Leann Ogasawara <ogasawara@osdl.org>, April 2004
-
-################################################
-
-For more information on using gcov please see:
-
-http://gcc.gnu.org/onlinedocs/gcc/Gcov.html
-
-With that said, here is how to get code coverage analysis for udev files.
-Note that this was developed with udev version 024.
-
-- Make sure you've installed udev and that it is working properly.
-
-- Build udev with:
-    make gcov-all
-  This will compile udev with gcov support. If you look into your udev directory
-  and see that it has been polluted with a bunch of *.gcno, *.gcda and *.gcov files.
-  gcov creates and uses these files to extract the code coverage info.
-
-- Then execute some udev tasks.  You can run some udev tests, reboot, or
-  do anything your little udev heart desires.  Once you are satisfied, you
-  can now see how much udev code was covered.  I personally recommend just
-  running test/udev-test.pl for starters.
-
-- To get the udev code coverage analysis:
-    make udev_gcov.txt
-
-- This creates udev_gcov.txt in the udev top level directory which holds all
-  the code coverage information. To see an example of the code coverage info
-  after executing the udev-test.pl test, please see:
-
-  http://developer.osdl.org/ogasawara/gcov_for_udev/udev_gcov.txt
-
-- Also, after having executed gcov on udev (ie executing run_gcov.sh) a
-  *.gcov file is created for every file which contained code that was
-  used.  Looking at the *.gcov files, one will see what lines of code
-  were hit, and what lines were missed.  For, example if code in udev-add.c
-  were executed, gcov then created a file called udev-add.c.gcov.  And a
-  portion of udev-add.c.gov might look like:
-
-  static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
-          95    {
-          95    	struct sysfs_attribute *attr = NULL;
-		
-          95    	attr = sysfs_get_classdev_attr(class_dev, "dev");
-          95    	if (attr == NULL)
-      ######    		goto error;
-			dbg("dev='%s'", attr->value);
-		
-          95    	if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
-      ######    		goto error;
-			dbg("found major=%d, minor=%d", udev->major, udev->minor);
-		
-          95    	return 0;
-		error:
-      ######    	return -1;
-		}
-
-  Any line of code that is preceded by a "######" implies that the code
-  was never hit during execution.
-
-- Once you are done with using gcov for udev and want to return to your
-  normal use of udev, run a regular 'make clean' on your udev directory.
-  Then just run a regular make and make install and you are back to normal.