Remove --experimental_enable_repo_mapping. (#311)

g-easy · web-flow · commit 85881379e16d · 2019-04-05T15:29:33.000+11:00
bazel 0.24.1 doesn't support it, and we haven't used it since commit 11f65c8.
diff --git a/.bazelrc b/.bazelrc
@@ -4,8 +4,6 @@
 # Needed by gRPC to build on some platforms.
 build --copt -DGRPC_BAZEL_BUILD
 
-common --experimental_enable_repo_mapping
-
 # --config=asan : Address Sanitizer.
 common:asan --copt -fsanitize=address
 common:asan --copt -DADDRESS_SANITIZER
