StartProfiler.php shouldn't be under version control

It's in .gitignore, and checkoutMediaWiki makes it

Change-Id: Id681a9ff875c15277ef27048f4ab7b91bde7a1b0

diff --git a/StartProfiler.php b/StartProfiler.php
deleted file mode 120000 (symlink)
index 6a20cbf..0000000
--- a/StartProfiler.php
+++ /dev/null
@@ -1 +0,0 @@
-../StartProfiler.php
\ No newline at end of file