Remove VoidFunction type

[AaronMoat]

Description

Related #6808

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as
  expected)
• This change requires a documentation update

Checklist:

• I have followed the
  CONTRIBUTING doc and the
  style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests and linter rules pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[changeset-bot]

🦋 Changeset detected

Latest commit: 4976129

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 26 packages

Name	Type
@graphql-tools/utils	Patch
@graphql-tools/executor	Patch
@graphql-tools/graphql-tag-pluck	Patch
@graphql-tools/import	Patch
@graphql-tools/links	Patch
@graphql-tools/load	Patch
@graphql-tools/merge	Patch
@graphql-tools/mock	Patch
@graphql-tools/node-require	Patch
@graphql-tools/relay-operation-optimizer	Patch
@graphql-tools/resolvers-composition	Patch
@graphql-tools/schema	Patch
@graphql-tools/apollo-engine-loader	Patch
@graphql-tools/code-file-loader	Patch
@graphql-tools/git-loader	Patch
@graphql-tools/github-loader	Patch
@graphql-tools/graphql-file-loader	Patch
@graphql-tools/json-file-loader	Patch
@graphql-tools/module-loader	Patch
@graphql-tools/url-loader	Patch
@graphql-tools/executor-apollo-link	Patch
@graphql-tools/executor-envelop	Patch
@graphql-tools/executor-legacy-ws	Patch
@graphql-tools/executor-urql-exchange	Patch
@graphql-tools/executor-yoga	Patch
graphql-tools	Patch

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