These are moves deleted between Pokémon X and Y and Pokémon Sword and Shield. They do not include Z-Moves for obvious reasons, and are separated between Relevant (moves that saw some usage) and Irrelevant (moves that saw no usage)

Relevant:

Assist
Barrier
Chip Away
Foresight
Frustration
Hidden Power
Jump Kick
Natural Gift
Psywave
Pursuit
Refresh
Return
Signal Beam
Steamroller
Synchronoise
Wake-up Slap

Irrelevant:

Barrage
Bestow
Bide
Bone Club
Bubble
Camouflage
Captivate
Clamp
Comet Punch
Constrict
Dizzy Punch
Double Slap
Dragon Rage
Egg Bomb
Embargo
Feint Attack
Flame Burst
Flash
Grass Whistle
Heal Block
Heal Order
Heart Stamp
Ice Ball
Ion Deluge
Karate Chop
Kinesis
Lucky Chant
Magnitude
Magnet Bomb
Meditate
Me First
Miracle Eye
Mirror Move
Mirror Shot
Mud Bomb
Mud Sport
Needle Arm
Nightmare
Odor Sleuth
Ominous Wind
Punishment
Rage
Razor Wind
Rock Climb
Rolling Kick
Rototiller
Secret Power
Sharpen
Silver Wind
Sky Drop
Sky Uppercut
Smelling Salts
Snatch
Sonic Boom
Spider Web
Spike Cannon
Telekinesis
Trump Card
Twineedle
Water Sport
Wring Out