Remove compatibility code before 1.64

[futursolo]

Description

This pull request removes compatibility code that aimed for versions before 1.64.
Since the MSRV of Yew is now 1.64, these compatibility code are no longer needed.

Checklist

• I have reviewed my own code
• [N/A] I have added tests

[github-actions]

Visit the preview URL for this PR (updated for commit 1e2b843):

https://yew-rs-api--pr3379-remove-compat-81hy02xi.web.app

_{(expires Sat, 26 Aug 2023 13:26:56 GMT)}

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[ranile]

Looks good! This can be merged once CI is green

[github-actions]

Benchmark - SSR

Yew Master

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	392.878	393.615	393.046	0.208
Hello World	10	662.714	668.194	664.840	1.756
Function Router	10	2103.696	2126.732	2114.802	6.515
Concurrent Task	10	1006.648	1008.129	1007.249	0.392
Many Providers	10	1520.513	1564.651	1542.927	18.412

Pull Request

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	392.904	393.118	392.999	0.069
Hello World	10	661.133	670.932	666.612	3.474
Function Router	10	2125.201	2166.064	2145.095	12.609
Concurrent Task	10	1005.884	1008.046	1007.284	0.567
Many Providers	10	1559.936	1609.993	1578.893	19.136

[github-actions]

Size Comparison

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
async_clock	102.317	102.317	0	0.000%
boids	175.508	175.508	0	0.000%
communication_child_to_parent	95.223	95.223	0	0.000%
communication_grandchild_with_grandparent	108.900	108.900	0	0.000%
communication_grandparent_to_grandchild	105.557	105.557	0	0.000%
communication_parent_to_child	92.698	92.698	0	0.000%
contexts	110.888	110.888	0	0.000%
counter	89.206	89.206	0	0.000%
counter_functional	89.921	89.921	0	0.000%
dyn_create_destroy_apps	92.292	92.292	0	0.000%
file_upload	103.541	103.541	0	0.000%
function_memory_game	174.312	174.312	0	0.000%
function_router	352.464	352.464	0	0.000%
function_todomvc	163.364	163.364	0	0.000%
futures	227.711	227.711	0	0.000%
game_of_life	112.299	112.299	0	0.000%
immutable	188.944	188.944	0	0.000%
inner_html	86.012	86.012	0	0.000%
js_callback	112.994	112.994	0	0.000%
keyed_list	201.197	201.197	0	0.000%
mount_point	89.209	89.209	0	0.000%
nested_list	114.495	114.495	0	0.000%
node_refs	96.172	96.172	0	0.000%
password_strength	1583.149	1583.149	0	0.000%
portals	98.240	98.240	0	0.000%
router	318.441	318.441	0	0.000%
simple_ssr	143.626	143.626	0	0.000%
ssr_router	389.676	389.676	0	0.000%
suspense	118.662	118.662	0	0.000%
timer	91.755	91.755	0	0.000%
timer_functional	100.290	100.290	0	0.000%
todomvc	143.699	143.699	0	0.000%
two_apps	89.916	89.916	0	0.000%
web_worker_fib	154.505	154.505	0	0.000%
webgl	88.477	88.477	0	0.000%

✅ None of the examples has changed their size significantly.