disk-resize: remove runGrowPart helper

we did refactor 655822f and because of
this now disk resize steps executed even there is no free space in the
disk. Before this refactor we used to return early as soon as there is a
specfic exit code from `growpart` command in case no free space on disk.

With this PR we are reverting this functionality to make sure we return
early if there is no space on disk to grow.

pkg/crc/machine/start.go

@@ -117,8 +117,17 @@ func growRootFileSystem(sshRunner *crcssh.Runner, preset crcPreset.Preset) error
 		return err
 	}
 
-	if err := runGrowpart(sshRunner, rootPart); err != nil {
-		return err
+	// with '/dev/[sv]da4' as input, run 'growpart /dev/[sv]da 4'
+	if _, _, err := sshRunner.RunPrivileged(fmt.Sprintf("Growing %s partition", rootPart), "/usr/bin/growpart", rootPart[:len("/dev/.da")], rootPart[len("/dev/.da"):]); err != nil {
+		var exitErr *ssh.ExitError
+		if !errors.As(err, &exitErr) {
+			return err
+		}
+		if exitErr.ExitStatus() != 1 {
+			return err
+		}
+		logging.Debugf("No free space after %s, nothing to do", rootPart)
+		return nil
 	}
 
 	if preset == crcPreset.Microshift {
@@ -160,21 +169,6 @@ func getrootPartition(sshRunner *crcssh.Runner, preset crcPreset.Preset) (string
 	return rootPart, nil
 }
 
-func runGrowpart(sshRunner *crcssh.Runner, rootPart string) error {
-	// with '/dev/[sv]da4' as input, run 'growpart /dev/[sv]da 4'
-	if _, _, err := sshRunner.RunPrivileged(fmt.Sprintf("Growing %s partition", rootPart), "/usr/bin/growpart", rootPart[:len("/dev/.da")], rootPart[len("/dev/.da"):]); err != nil {
-		var exitErr *ssh.ExitError
-		if !errors.As(err, &exitErr) {
-			return err
-		}
-		if exitErr.ExitStatus() != 1 {
-			return err
-		}
-		logging.Debugf("No free space after %s, nothing to do", rootPart)
-	}
-	return nil
-}
-
 func growLVForMicroshift(sshRunner *crcssh.Runner, lvFullName string, rootPart string) error {
 	if _, _, err := sshRunner.RunPrivileged("Resizing the physical volume(PV)", "/usr/sbin/pvresize", "--devices", rootPart, rootPart); err != nil {
 		return err