Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

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

Differential Revision: https://reviews.llvm.org/D46320

llvm-svn: 331834
diff --git a/clang/lib/Edit/RewriteObjCFoundationAPI.cpp b/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
index dc501b5..f89526a 100644
--- a/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
+++ b/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
@@ -95,7 +95,7 @@
 // rewriteToObjCSubscriptSyntax.
 //===----------------------------------------------------------------------===//
 
-/// \brief Check for classes that accept 'objectForKey:' (or the other selectors
+/// Check for classes that accept 'objectForKey:' (or the other selectors
 /// that the migrator handles) but return their instances as 'id', resulting
 /// in the compiler resolving 'objectForKey:' as the method from NSDictionary.
 ///
@@ -355,7 +355,7 @@
   return false;
 }
 
-/// \brief Returns true if the immediate message arguments of \c Msg should not
+/// Returns true if the immediate message arguments of \c Msg should not
 /// be rewritten because it will interfere with the rewrite of the parent
 /// message expression. e.g.
 /// \code
@@ -372,7 +372,7 @@
 // rewriteToArrayLiteral.
 //===----------------------------------------------------------------------===//
 
-/// \brief Adds an explicit cast to 'id' if the type is not objc object.
+/// Adds an explicit cast to 'id' if the type is not objc object.
 static void objectifyExpr(const Expr *E, Commit &commit);
 
 static bool rewriteToArrayLiteral(const ObjCMessageExpr *Msg,
@@ -434,7 +434,7 @@
 // rewriteToDictionaryLiteral.
 //===----------------------------------------------------------------------===//
 
-/// \brief If \c Msg is an NSArray creation message or literal, this gets the
+/// If \c Msg is an NSArray creation message or literal, this gets the
 /// objects that were used to create it.
 /// \returns true if it is an NSArray and we got objects, or false otherwise.
 static bool getNSArrayObjects(const Expr *E, const NSAPI &NS,