Remove itAsync test function from @apollo/client/testing

[jerelmiller]

Resolves #12195

Removes itAsync from @apollo/client/testing entrypoint. I've added a changeset since its exported from the public /testing entrypoint.

[changeset-bot]

🦋 Changeset detected

Latest commit: aa2f83d

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

This PR includes changesets to release 1 package

Name	Type
@apollo/client	Major

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[svc-apollo-docs]

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Build ID: 08ea54df037a1c8df6374c06

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commit: aa2f83d

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[github-actions]

size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	40.59 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	49.99 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	47.11 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	36.18 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	33.58 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.26 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.24 KB (0%)
import { useQuery } from "dist/react/index.js"	5.12 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.21 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	5.61 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.68 KB (0%)
import { useMutation } from "dist/react/index.js"	3.62 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.84 KB (0%)
import { useSubscription } from "dist/react/index.js"	4.43 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	3.48 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	5.51 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.17 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js"	5.01 KB (0%)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.66 KB (0%)
import { useLoadableQuery } from "dist/react/index.js"	5.09 KB (0%)
import { useLoadableQuery } from "dist/react/index.js" (production)	3.74 KB (0%)
import { useReadQuery } from "dist/react/index.js"	3.41 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	3.35 KB (0%)
import { useFragment } from "dist/react/index.js"	2.36 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2.31 KB (0%)