chore(cabal): remove unused haskell dependencies

This should reduce setup time for build process.

- cache: introduced in #2928, defunct since #4084
- clock: introduced in #2928, defunct since #4084
- heredoc: introduced in #714, defunct since #4390
- iproute: introduced in #3560, defunct since #4288

Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>

Author: taimoorzaeem

postgrest.cabal

@@ -102,10 +102,8 @@ library
                     , auto-update               >= 0.1.4 && < 0.3
                     , base64-bytestring         >= 1 && < 1.3
                     , bytestring                >= 0.10.8 && < 0.13
-                    , cache                     >= 0.1.3 && < 0.2.0
                     , case-insensitive          >= 1.2 && < 1.3
                     , cassava                   >= 0.4.5 && < 0.6
-                    , clock                     >= 0.8.3 && < 0.9.0
                     , configurator-pg           >= 0.2.11 && < 0.3
                     , containers                >= 0.5.7 && < 0.7
                     , cookie                    >= 0.4.2 && < 0.6
@@ -118,11 +116,9 @@ library
                     , hasql-notifications       >= 0.2.2.2 && < 0.2.3
                     , hasql-pool                >= 1.0.1 && < 1.1
                     , hasql-transaction         >= 1.0.1 && < 1.2
-                    , heredoc                   >= 0.2 && < 0.3
                     , http-client               >= 0.7.19 && < 0.8
                     , http-types                >= 0.12.2 && < 0.13
                     , insert-ordered-containers >= 0.2.2 && < 0.3
-                    , iproute                   >= 1.7.0 && < 1.8
                     , jose-jwt                  >= 0.9.6 && < 0.11
                     , lens                      >= 4.14 && < 5.4
                     , lens-aeson                >= 1.0.1 && < 1.3