testimage/oeqa: Drop testimage_dump_host functionality

The intent behind these functions was to dump the system state when issues occured
but it has never really worked as we'd planned. Regular monitoring as the build
runs has largely replaced this as that allows a trend to be seen rather than a spot
value which was never really useful. The code is bitrotting and not functioning
correctly so drop it.

[YOCTO #13872]

RP: Reword commit message
(From OE-Core rev: 8d1bc34cffdd9f054e51db4e880747c79bf834fe)

Signed-off-by: Thomas Roos <throos@amazon.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit dea37ba49a236029da73d5cfbfc069bffc38b508)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/lib/oeqa/utils/dump.py

@@ -51,9 +51,7 @@ class BaseDumper(object):
         self.dump_dir = dump_dir
 
     def _construct_filename(self, command):
-        if isinstance(self, HostDumper):
-            prefix = "host"
-        elif isinstance(self, TargetDumper):
+        if isinstance(self, TargetDumper):
             prefix = "target"
         elif isinstance(self, MonitorDumper):
             prefix = "qmp"
@@ -76,22 +74,6 @@ class BaseDumper(object):
             with open(fullname, 'w') as dump_file:
                 dump_file.write(output)
 
-class HostDumper(BaseDumper):
-    """ Class to get dumps from the host running the tests """
-
-    def __init__(self, cmds, parent_dir):
-        super(HostDumper, self).__init__(cmds, parent_dir)
-
-    def dump_host(self, dump_dir=""):
-        if dump_dir:
-            self.dump_dir = dump_dir
-        env = os.environ.copy()
-        env['PATH'] = '/usr/sbin:/sbin:/usr/bin:/bin'
-        env['COLUMNS'] = '9999'
-        for cmd in self.cmds:
-            result = runCmd(cmd, ignore_status=True, env=env)
-            self._write_dump(cmd.split()[0], result.output)
-
 class TargetDumper(BaseDumper):
     """ Class to get dumps from target, it only works with QemuRunner.
         Will give up permanently after 5 errors from running commands over