Revert "[llvm-profdata] Add support for weighted merge of profile data"

This reverts commit b7250858d96b8ce567681214273ac0e62713c661.

Reverting in order to investigate Windows test failure.

llvm-svn: 254687
diff --git a/llvm/docs/CommandGuide/llvm-profdata.rst b/llvm/docs/CommandGuide/llvm-profdata.rst
index a4b18f3..210826a 100644
--- a/llvm/docs/CommandGuide/llvm-profdata.rst
+++ b/llvm/docs/CommandGuide/llvm-profdata.rst
@@ -28,7 +28,7 @@
 SYNOPSIS
 ^^^^^^^^
 
-:program:`llvm-profdata merge` [*options*] [*filename[:weight]...*]
+:program:`llvm-profdata merge` [*options*] [*filenames...*]
 
 DESCRIPTION
 ^^^^^^^^^^^
@@ -37,10 +37,6 @@
 generated by PGO instrumentation and merges them together into a single
 indexed profile data file.
 
-The profile counts in each input file can be scaled (multiplied) by specifying
-``<filename>:<weight>``, where `<weight>` is a decimal integer >= 1.
-A default weight of 1 is assumed if only `<filename>` is given.
-
 OPTIONS
 ^^^^^^^