Revert preact signals support (#4843)

* Revert "Update preact example to match @astrojs/preact ranges (#4840)"

This reverts commit d650a1161a0288f8f2d35ae67771279d067920e9.

* Revert "[ci] format"

This reverts commit e3c78c5b164c338389c437743ba02a7be64e27fb.

* Revert "Support shared signals in Preact islands (#4763)"

This reverts commit 5e46be54683592773e6dfc2d33825493886114b0.

1 files changed, 0 insertions, 32 deletions

diff --git a/packages/integrations/preact/src/context.ts b/packages/integrations/preact/src/context.ts
deleted file mode 100644
index c711017c4..000000000
--- a/packages/integrations/preact/src/context.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-import type { PropNameToSignalMap, RendererContext, SignalLike } from './types';
-
-export type Context = {
-	id: string;
-	c: number;
-	signals: Map<SignalLike, string>;
-	propsToSignals: Map<Record<string, any>, PropNameToSignalMap>;
-};
-
-const contexts = new WeakMap<RendererContext['result'], Context>();
-
-export function getContext(result: RendererContext['result']): Context {
-	if (contexts.has(result)) {
-		return contexts.get(result)!;
-	}
-	let ctx = {
-		c: 0,
-		get id() {
-			return 'p' + this.c.toString();
-		},
-		signals: new Map(),
-		propsToSignals: new Map(),
-	};
-	contexts.set(result, ctx);
-	return ctx;
-}
-
-export function incrementId(ctx: Context): string {
-	let id = ctx.id;
-	ctx.c++;
-	return id;
-}