Remove unused `#include`s from parser/cutils.c

Looks like these have been unused since
7c665f9c.
22 jobs for !1709 with wip/marge_bot_batch_merge_job in 408 minutes and 10 seconds (queued for 1 minute and 53 seconds)
detached
Status Job ID Name Coverage
  Lint
passed #154160
lint
ghc-linters

00:01:18

passed #154161
lint
lint-linters

00:00:20

passed #154164
lint
lint-submods-marge

00:00:32

passed #154162
lint
lint-testsuite

00:00:22

passed #154163
lint
typecheck-testsuite

00:01:19

 
  Build
passed #154166
x86_64-linux
hadrian-ghc-in-ghci

00:13:41

passed #154168
x86_64-linux
release-x86_64-linux-deb9-dwarf

00:56:21

passed #154167
x86_64-linux
validate-x86_64-linux-deb9-debug

01:17:20

passed #154182
x86_64-linux
validate-x86_64-linux-deb9-hadrian

01:29:35

failed #154165
x86_64-linux
validate-x86_64-linux-deb9-hadrian

00:04:33

 
  Full Build
failed #154170
aarch64-linux allowed to fail
validate-aarch64-linux-deb9

00:58:35

passed #154171
x86_64-linux
validate-i386-linux-deb9

01:47:55

passed #154169
x86_64-darwin
validate-x86_64-darwin

01:24:19

passed #154172
x86_64-linux
validate-x86_64-linux-deb9-integer-simple

00:43:15

passed #154173
x86_64-linux
validate-x86_64-linux-deb9-unreg

03:31:41

passed #154174
x86_64-linux
validate-x86_64-linux-fedora27

01:30:47

failed #154176
x86_64-windows allowed to fail
validate-x86_64-windows

00:00:04

failed #154175
x86_64-windows allowed to fail
validate-x86_64-windows-hadrian

00:01:02

 
  Cleanup
passed #154177
x86_64-darwin
cleanup-darwin

00:00:12

 
  Packaging
failed #154178
x86_64-linux allowed to fail
doc-tarball

00:00:28

 
  Testing
manual #154179
x86_64-linux allowed to fail manual
hackage
passed #154180
x86_64-linux
perf-nofib

00:26:55

 
Name Stage Failure
failed
validate-aarch64-linux-deb9 Full Build
Makefile:123: recipe for target 'all' failed
Running after script...
$ cp -Rf $HOME/.cabal cabal-cache
Uploading artifacts...
WARNING: ghc-*.tar.xz: no matching files
WARNING: junit.xml: no matching files
ERROR: No files to upload
Uploading artifacts...
WARNING: junit.xml: no matching files
ERROR: No files to upload
failed
validate-x86_64-windows-hadrian Full Build
Runtime platform                                    arch=amd64 os=windows pid=2392 revision=1f513601 version=11.10.1
WARNING: ghc.tar.xz: no matching files
WARNING: junit.xml: no matching files
ERROR: No files to upload
Uploading artifacts...
Runtime platform
arch=amd64 os=windows pid=3316 revision=1f513601 version=11.10.1
WARNING: junit.xml: no matching files
ERROR: No files to upload
ERROR: Job failed: exit status 1
failed
validate-x86_64-windows Full Build
Runtime platform                                    arch=amd64 os=windows pid=1740 revision=1f513601 version=11.10.1
WARNING: ghc-*.tar.xz: no matching files
WARNING: junit.xml: no matching files
ERROR: No files to upload
Uploading artifacts...
Runtime platform
arch=amd64 os=windows pid=6680 revision=1f513601 version=11.10.1
WARNING: junit.xml: no matching files
ERROR: No files to upload
ERROR: Job failed: exit status 1
failed
doc-tarball Packaging
Synchronizing submodule url for 'utils/hsc2hs'
$ git submodule update --init --recursive
$ git checkout .gitmodules
$ git fetch https://gitlab.haskell.org/ghc/ghc-performance-notes.git refs/notes/perf:refs/notes/perf || true
From https://gitlab.haskell.org/ghc/ghc-performance-notes
d35f008674..0dbd816dab refs/notes/perf -> refs/notes/perf
$ if [ ! -f "$LINUX_BINDIST" ]; then # collapsed multi-line command
Error: ghc-x86_64-mingw32.tar.xz does not exist. Did the 64-bit Windows job fail?
ERROR: Job failed: exit code 1