Revert "Moves the 'import_*.config' files in dart-sdk into a new directory"

lib/_internal/config/import_any.config

Index: lib/_internal/config/import_any.config
diff --git a/lib/_internal/config/import_any.config b/lib/_internal/config/import_any.config
deleted file mode 100644
index e8cf912f033719ad0e5b41022882bf08f8e4690a..0000000000000000000000000000000000000000
--- a/lib/_internal/config/import_any.config
+++ /dev/null
@@ -1,50 +0,0 @@
-#
-# Entries in this file define how editor maps #import(...) directives
-#
-# A key that ends with '\:' maps an entire scheme to a directory tree
-#    (All ':' characters in the key must be escaped)
-# For example, an entry in this file such as
-#    foo\: = /user/name/some/dir
-# will map the following imports
-#    #import('foo:bar')             --> /user/name/some/dir/bar/bar.dart
-#    #import('foo:blat.dart')       --> /user/name/some/dir/blat.dart
-#    #import('foo:buzz/blue.dart')  --> /user/name/some/dir/buzz/blue.dart
-#
-# A key that does not end with '\:' maps a single import to a single file
-# For example, an entry in this file such as
-#    green\:light = /user/name/some/dir/mylib.dart
-# will map only
-#    #import('green:light')         --> /user/name/some/dir/mylib.dart
-#
-# A specific mapping (does not end with '\:') takes precedence
-# For example, given
-#    foo\: = /user/name/some/dir
-#    foo\:bar = /user/name/another/dir/myfile.dart
-# will map
-#    #import('foo:bar')             --> /user/name/another/dir/myfile.dart
-#    #import('foo:blue')            --> /user/name/some/dir/blue/blue.dart
-#
-# Paths that are not absolute are considered to be relative to editor installation directory.
-# Leading and trailing whitespace around keys and values is ignored.
-# This file is read exactly once when editor is launched
-#
-
-dart\:         = .
-dart\:builtin  = builtin/builtin_runtime.dart
-dart\:core     = core/core_runtime.dart
-dart\:coreimpl = coreimpl/coreimpl_runtime.dart
-# dom/dom_frog.dart is a placeholder for dartium dom
-dart\:dom      = dom/dom_frog.dart
-dart\:html     = html/html_dartium.dart
-dart\:io       = io/io_runtime.dart
-dart\:isolate  = isolate/isolate_compiler.dart
-
-#
-# Libraries referenced using a relative path by both dartdoc and compiler
-# Need to either remove the relative reference 
-# or promote them to top level so that they can be referenced via dart:<libname>
-#
-
-dart\:frog/lang           = frog/lang.dart
-dart\:frog/file_system    = frog/file_system.dart
-dart\:frog/file_system_vm = frog/file_system_vm.dart