Remove deprecated SuspenseCache export

[phryneas]

Isn't it nice to have a PR that just removes code? :)

Checklist:

• If this PR contains changes to the library itself (not necessary for e.g. docs updates), please include a changeset (see CONTRIBUTING.md)
• If this PR is a new feature, please reference an issue where a consensus about the design was reached (not necessary for small changes)
• Make sure all of the significant new logic is covered by tests

[changeset-bot]

🦋 Changeset detected

Latest commit: 32db9fe

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	Patch

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[github-actions]

size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	37.1 KB (-0.49% 🔽)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	43.44 KB (-0.71% 🔽)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	41.99 KB (-0.8% 🔽)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	32.52 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	31.27 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.21 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.2 KB (-0.09% 🔽)
import { useQuery } from "dist/react/index.js"	4.27 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.08 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	4.58 KB (0%)
import { useLazyQuery } from "dist/react/index.js" (production)	4.4 KB (0%)
import { useMutation } from "dist/react/index.js"	2.52 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.51 KB (0%)
import { useSubscription } from "dist/react/index.js"	2.24 KB (0%)
import { useSubscription } from "dist/react/index.js" (production)	2.2 KB (0%)
import { useSuspenseQuery } from "dist/react/index.js"	4.59 KB (-3.45% 🔽)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.02 KB (-4.04% 🔽)
import { useBackgroundQuery } from "dist/react/index.js"	4.1 KB (-4.2% 🔽)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.52 KB (-4.81% 🔽)
import { useReadQuery } from "dist/react/index.js"	2.96 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	2.91 KB (0%)
import { useFragment } from "dist/react/index.js"	2.08 KB (0%)
import { useFragment } from "dist/react/index.js" (production)	2.03 KB (0%)

[jerelmiller]

💯 🔥 gosh how did we forget about this in the 3.8 release?!?! Great to have removed code!