diff --git a/packages/config-loader/api-report.md b/packages/config-loader/api-report.md
index 76c6468556..269159aab4 100644
--- a/packages/config-loader/api-report.md
+++ b/packages/config-loader/api-report.md
@@ -46,7 +46,6 @@ export function loadConfig(
 export type LoadConfigOptions = {
   configRoot: string;
   configTargets: ConfigTarget[];
-  env?: string;
   experimentalEnvFunc?: (name: string) => Promise<string | undefined>;
   remote?: LoadConfigOptionsRemote;
   watch?: LoadConfigOptionsWatch;
diff --git a/packages/core-plugin-api/api-report.md b/packages/core-plugin-api/api-report.md
index 0cf97a4c13..ee7a0764b1 100644
--- a/packages/core-plugin-api/api-report.md
+++ b/packages/core-plugin-api/api-report.md
@@ -11,19 +11,17 @@ import { ComponentType } from 'react';
 import { Config } from '@backstage/config';
 import { IconComponent as IconComponent_2 } from '@backstage/core-plugin-api';
 import { IdentityApi as IdentityApi_2 } from '@backstage/core-plugin-api';
-import { Observable as Observable_2 } from '@backstage/types';
-import { Observer as Observer_2 } from '@backstage/types';
+import { Observable } from '@backstage/types';
 import { ProfileInfo as ProfileInfo_2 } from '@backstage/core-plugin-api';
 import { default as React_2 } from 'react';
 import { ReactElement } from 'react';
 import { ReactNode } from 'react';
-import { Subscription as Subscription_2 } from '@backstage/types';
 import { SvgIconProps } from '@material-ui/core';
 
 // @public
 export type AlertApi = {
   post(alert: AlertMessage): void;
-  alert$(): Observable_2<AlertMessage>;
+  alert$(): Observable<AlertMessage>;
 };
 
 // @public
@@ -141,7 +139,6 @@ export type ApiRef<T> = {
 // @public
 export type ApiRefConfig = {
   id: string;
-  description?: string;
 };
 
 // @public
@@ -175,7 +172,7 @@ export type AppTheme = {
 // @public
 export type AppThemeApi = {
   getInstalledThemes(): AppTheme[];
-  activeThemeId$(): Observable_2<string | undefined>;
+  activeThemeId$(): Observable<string | undefined>;
   getActiveThemeId(): string | undefined;
   setActiveThemeId(themeId?: string): void;
 };
@@ -364,9 +361,6 @@ export function createRouteRef<
 >(config: {
   id?: string;
   params?: ParamKey[];
-  path?: string;
-  icon?: OldIconComponent;
-  title?: string;
 }): RouteRef<OptionalParams<Params>>;
 
 // @public
@@ -408,7 +402,7 @@ export { Error_2 as Error };
 // @public
 export type ErrorApi = {
   post(error: ErrorApiError, context?: ErrorApiErrorContext): void;
-  error$(): Observable_2<{
+  error$(): Observable<{
     error: ErrorApiError;
     context?: ErrorApiErrorContext;
   }>;
@@ -597,7 +591,7 @@ export type OAuthRequestApi = {
   createAuthRequester<OAuthResponse>(
     options: OAuthRequesterOptions<OAuthResponse>,
   ): OAuthRequester<OAuthResponse>;
-  authRequest$(): Observable_2<PendingOAuthRequest[]>;
+  authRequest$(): Observable<PendingOAuthRequest[]>;
 };
 
 // @public
@@ -619,12 +613,6 @@ export type OAuthRequesterOptions<TOAuthResponse> = {
 // @public
 export type OAuthScope = string | string[];
 
-// @public @deprecated
-export type Observable<T> = Observable_2<T>;
-
-// @public @deprecated
-export type Observer<T> = Observer_2<T>;
-
 // @public @deprecated
 export const oidcAuthApiRef: ApiRef<
   OAuthApi &
@@ -747,9 +735,6 @@ export type RouteFunc<Params extends AnyParams> = (
 export type RouteRef<Params extends AnyParams = any> = {
   $$routeRefType: 'absolute';
   params: ParamKeys<Params>;
-  path: string;
-  icon?: OldIconComponent;
-  title?: string;
 };
 
 // @public @deprecated
@@ -761,7 +746,7 @@ export const samlAuthApiRef: ApiRef<
 export type SessionApi = {
   signIn(): Promise<void>;
   signOut(): Promise<void>;
-  sessionState$(): Observable_2<SessionState>;
+  sessionState$(): Observable<SessionState>;
 };
 
 // @public
@@ -787,7 +772,7 @@ export type SignInResult = {
 export interface StorageApi {
   forBucket(name: string): StorageApi;
   get<T>(key: string): T | undefined;
-  observe$<T>(key: string): Observable_2<StorageValueChange<T>>;
+  observe$<T>(key: string): Observable<StorageValueChange<T>>;
   remove(key: string): Promise<void>;
   set(key: string, data: any): Promise<void>;
 }
@@ -809,9 +794,6 @@ export type SubRouteRef<Params extends AnyParams = any> = {
   params: ParamKeys<Params>;
 };
 
-// @public @deprecated
-export type Subscription = Subscription_2;
-
 // @public
 export type TypesToApiRefs<T> = {
   [key in keyof T]: ApiRef<T[key]>;
diff --git a/packages/test-utils/api-report.md b/packages/test-utils/api-report.md
index 295cf3a8c3..24f17e0b84 100644
--- a/packages/test-utils/api-report.md
+++ b/packages/test-utils/api-report.md
@@ -93,15 +93,6 @@ export type MockStorageBucket = {
   [key: string]: any;
 };
 
-// @public @deprecated (undocumented)
-export const msw: {
-  setupDefaultHandlers: (worker: {
-    listen: (t: any) => void;
-    close: () => void;
-    resetHandlers: () => void;
-  }) => void;
-};
-
 // @public
 export function renderInTestApp(
   Component: ComponentType | ReactNode,