Remove note about "sub-runfiles" from test encyclopedia

Bazel doesn't create "sub-runfiles".

Closes #25159.

PiperOrigin-RevId: 723480332
Change-Id: I11813e1b60d058f38e60e5ae7cacea0585ca08a3
diff --git a/site/en/reference/test-encyclopedia.md b/site/en/reference/test-encyclopedia.md
index 88aa868..efa9b43 100644
--- a/site/en/reference/test-encyclopedia.md
+++ b/site/en/reference/test-encyclopedia.md
@@ -776,9 +776,3 @@
     The destination of the symlink is the OutputFileName() of the OutputFile or
     CommandRule, expressed as an absolute path. Thus, the destination of the
     symlink might be `$(WORKSPACE)/linux-dbg/deps/server/42/server`.
-*   **Symlinks to sub-runfiles**: for every `*_binary()` Z that is a run-time
-    dependency of `*_binary()` C, there is a second link in the runfiles
-    directory of C to the runfiles of Z. The name of the symlink is
-    `$(WORKSPACE)/package_name/rule_name.runfiles`. The target of the symlink is
-    the runfiles directory. For example, all subprograms share a common runfiles
-    directory.