build: remove unused no-strict tsconfig file (angular#42506)

In the past, when we enabled `--strict` in the repository, we added
another tsconfig for code not being migrated to be `--strict`
compatible. This was done for the deprecated http and webworker
packages. Since these are now removed, we can rmeove the logic.

PR Close angular#42506

packages/BUILD.bazel

@@ -1,12 +1,12 @@
+load("//tools:defaults.bzl", "ts_config", "ts_library")
+
 package(default_visibility = ["//visibility:public"])
 
 exports_files([
     "tsconfig-build.json",
     "tsconfig.json",
 ])
 
-load("//tools:defaults.bzl", "ts_config", "ts_library")
-
 ts_library(
     name = "types",
     srcs = glob(["*.ts"]),
@@ -22,12 +22,6 @@ ts_config(
     deps = [":tsconfig-build.json"],
 )
 
-ts_config(
-    name = "tsconfig-build-no-strict",
-    src = "tsconfig-build-no-strict.json",
-    deps = [":tsconfig-build.json"],
-)
-
 exports_files([
     "license-banner.txt",
     "README.md",