How do I remove lines from GRUB that no longer work?

[Von Kirkus]

Here's my output:

Welcome to Linux Lite 5.0 von

Monday 14 December 2020, 06:42:31
Memory Usage: 866/7847MB (11.04%)
Disk Usage: 35/90GB (42%)
Support - https://www.freecinema2022.gq/forums/ (Right click, Open Link)

von  ~  df -hT
Filesystem    Type      Size  Used Avail Use% Mounted on
udev          devtmpfs  3.8G    0  3.8G  0% /dev
tmpfs          tmpfs    785M  2.9M  782M  1% /run
/dev/sda8      ext4      90G  35G  50G  42% /
tmpfs          tmpfs    3.9G  55M  3.8G  2% /dev/shm
tmpfs          tmpfs    5.0M  4.0K  5.0M  1% /run/lock
tmpfs          tmpfs    3.9G    0  3.9G  0% /sys/fs/cgroup
/dev/sda1      vfat      259M  61M  198M  24% /boot/efi
tmpfs          tmpfs    785M  16K  785M  1% /run/user/1000
von  ~  lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0 223.6G  0 disk
├─sda1  8:1    0  259M  0 part /boot/efi
├─sda2  8:2    0  75.3G  0 part
├─sda3  8:3    0  19.6G  0 part
├─sda4  8:4    0    26G  0 part
├─sda5  8:5    0    1M  0 part
├─sda6  8:6    0  513M  0 part
├─sda7  8:7    0  10.8G  0 part
└─sda8  8:8    0  91.2G  0 part /
sr0    11:0    1  1024M  0 rom 
von  ~ 
After I made the original post I updated Windows and ran the grub update again and it now looks like this:
*Ubuntu                                                        When selected boots into Linux 5.0 updated normally
  Advanced options for Ubuntu                          Opens options normally
  Windows Boot Manager (on /dev/sda1)            Tries to boot Windows, but ends at blue Windows error boot recovery options screen
  Linux Lite 4.8 (18.04) (on /dev/sda4)              Goes to logon screen, but won't open, just keeps returning to logon screen after P/W
  Advanced options for Linux Lite 4.8 (18.04) (on /dev/sda4)    Same as above on all options
  Linux Lite 5.0 (20.04) (on /dev/sda7)              Goes to logon screen, but won't open, just keeps returning to logon screen after P/W
  Advanced options for Linux Lite 5.0 (20.04) (on /dev/sda7)    Same as above on all options
  UEFI Firmware Settings                                    Opens BIOS settings normally

The Windows boot manager on sdb1 which was the active one was deleted and now it boots off sda1. I only have one drive, but several partitions, sda7 and sda4 won't load beyond the password screen, it just bootloops back for the password. Ubuntu is now on sda8 which loads LL5-Version-
Kernel : Linux 5.4.0-58-generic (x86_64)
Version : #64-Ubuntu SMP Wed Dec 9 08:16:25 UTC 2020
C Library : GNU C Library / (Ubuntu GLIBC 2.31-0ubuntu9.1) 2.31
Distribution : Ubuntu 20.04.1 LTS
-Current Session-
Computer Name : von-Satellite-C55-B
User Name : von (Von)
Language : en_US.UTF-8 (en_US)
Home Directory : /home/von
-Misc-
Uptime : 23 minutes
Load Average : 0.77, 0.76, 0.68
Available entropy in /dev/random : 3362 bits (healthy)