Refactor: Remove error type from SocketApp

[tusharmath]

SocketApp doesn't provide a way to catch errors. So adding an additional type-param for error doesn't add much value.

[codecov-commenter]

Codecov Report

Merging #769 (502c718) into main (df11745) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main     #769   +/-   ##
=======================================
  Coverage   51.01%   51.01%           
=======================================
  Files          69       69           
  Lines        2074     2074           
  Branches       57       57           
=======================================
  Hits         1058     1058           
  Misses       1016     1016           

Impacted Files	Coverage Δ
zio-http/src/main/scala/zhttp/http/Response.scala	69.23% <0.00%> (ø)
...ala/zhttp/service/server/ServerSocketHandler.scala	30.76% <ø> (ø)
...-http/src/main/scala/zhttp/socket/Conversion.scala	0.00% <0.00%> (ø)
...o-http/src/main/scala/zhttp/socket/SocketApp.scala	3.03% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update df11745...502c718. Read the comment docs.