core: delete entity models #3668

Job	Run time
dojo-defi-test	10m 13s
dojo-defi-test	10m 13s
dojo-core-test	8m 0s
dojo-core-test	8m 0s
docs	6m 56s
docs	6m 56s
clippy	6m 59s
clippy	6m 59s
dojo-erc-test	17m 58s
dojo-erc-test	17m 58s
dojo-primitive-test	8m 42s
dojo-primitive-test	8m 42s
dojo-spawn-and-move-example-test	7m 15s
dojo-spawn-and-move-example-test	7m 15s
ensure-wasm	4m 33s
ensure-wasm	4m 33s
ensure-windows	14m 27s
ensure-windows	14m 27s
fmt	44s
fmt	44s
test	13m 41s
test	13m 46s
test-hurl	5m 27s
test-hurl	5m 27s
	3h 29m 55s

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