Remove \brief commands from doxygen comments.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

  for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272
diff --git a/llvm/lib/Support/MD5.cpp b/llvm/lib/Support/MD5.cpp
index a531722..9b02f62 100644
--- a/llvm/lib/Support/MD5.cpp
+++ b/llvm/lib/Support/MD5.cpp
@@ -74,7 +74,7 @@
 
 using namespace llvm;
 
-/// \brief This processes one or more 64-byte data blocks, but does NOT update
+/// This processes one or more 64-byte data blocks, but does NOT update
 ///the bit counters.  There are no alignment requirements.
 const uint8_t *MD5::body(ArrayRef<uint8_t> Data) {
   const uint8_t *ptr;
@@ -229,7 +229,7 @@
   update(SVal);
 }
 
-/// \brief Finish the hash and place the resulting hash into \p result.
+/// Finish the hash and place the resulting hash into \p result.
 /// \param Result is assumed to be a minimum of 16-bytes in size.
 void MD5::final(MD5Result &Result) {
   unsigned long used, free;