[NFC] Remove doxygen brief tag from BasicBlock.h
[NFC] Remove doxygen brief tag from BasicBlock.h

Summary: Documentation is built using the AutoBrief configuration option in docs/doxygen.cfg.in.  This change removes the redundant brief tags from BasicBlock.h.   I'm happy to write a sed script and remove all \brief tags as a separate commit later.

Reviewers: aprantl

Reviewed By: aprantl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45708

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@330242 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm