Issue #3514 Remove crc instance entries from known_hosts file

while using the podman preset in CRC the instance identity is added to the
known_hosts file and when it changes podman-remote complains about it  and
shows the following error:
```
Error: failed to connect: ssh: handshake failed: knownhosts: key mismatch
```

this will occur in crc when users upgrade podman from 4.3.1 to 4.4.1 with this patch it'll
remove the [127.0.0.1]:2222 entries from known_hosts which should work-around this issue

pkg/crc/machine/delete.go

@@ -1,8 +1,13 @@
 package machine
 
 import (
+	"bufio"
+	"fmt"
 	"os"
+	"path/filepath"
+	"strings"
 
+	"github.com/crc-org/crc/pkg/crc/constants"
 	"github.com/crc-org/crc/pkg/crc/logging"
 	"github.com/crc-org/crc/pkg/crc/podman"
 	"github.com/pkg/errors"
@@ -39,5 +44,58 @@ func (client *client) Delete() error {
 			logging.Warnf("Failed to remove crc contexts from kubeconfig: %v", err)
 		}
 	}
+	return removeCRCHostEntriesFromKnownHosts()
+}
+
+func removeCRCHostEntriesFromKnownHosts() error {
+	knownHostsPath := filepath.Join(constants.GetHomeDir(), ".ssh", "known_hosts")
+	if _, err := os.Stat(knownHostsPath); err != nil {
+		return nil
+	}
+	f, err := os.Open(knownHostsPath)
+	if err != nil {
+		return fmt.Errorf("Unable to open user's 'known_hosts' file: %w", err)
+	}
+	defer f.Close()
+
+	tempHostsFile, err := os.CreateTemp(filepath.Join(constants.GetHomeDir(), ".ssh"), "crc")
+	if err != nil {
+		return fmt.Errorf("Unable to create temp file: %w", err)
+	}
+	defer func() {
+		tempHostsFile.Close()
+		os.Remove(tempHostsFile.Name())
+	}()
+
+	if err := tempHostsFile.Chmod(0600); err != nil {
+		return fmt.Errorf("Error trying to change permissions for temp file: %w", err)
+	}
+
+	var foundCRCEntries bool
+	scanner := bufio.NewScanner(f)
+	writer := bufio.NewWriter(tempHostsFile)
+	for scanner.Scan() {
+		if strings.Contains(scanner.Text(), "[127.0.0.1]:2222") || strings.Contains(scanner.Text(), "192.168.130.11") {
+			foundCRCEntries = true
+			continue
+		}
+		if _, err := writer.WriteString(fmt.Sprintf("%s\n", scanner.Text())); err != nil {
+			return fmt.Errorf("Error while writing hostsfile content to temp file: %w", err)
+		}
+	}
+
+	if err := writer.Flush(); err != nil {
+		return fmt.Errorf("Error while flushing buffered content to temp file: %w", err)
+	}
+
+	if foundCRCEntries {
+		if err := f.Close(); err != nil {
+			return fmt.Errorf("Error closing known_hosts file: %w", err)
+		}
+		if err := tempHostsFile.Close(); err != nil {
+			return fmt.Errorf("Error closing temp file: %w", err)
+		}
+		return os.Rename(tempHostsFile.Name(), knownHostsPath)
+	}
 	return nil
 }