Rename libevent-host to libevent

There's no need to use a different name for target and host modules, and
in Soong, it's better to use the same for both.

Change-Id: Ib2d8d0cc8a1e0f7f95d7c2795a360f02d946fa1a
diff --git a/core/Makefile b/core/Makefile
index 79faae1..2b006fb 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1615,7 +1615,7 @@
   $(HOST_LIBRARY_PATH)/libbrillo-http$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libchrome$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libcurl-host$(HOST_SHLIB_SUFFIX) \
-  $(HOST_LIBRARY_PATH)/libevent-host$(HOST_SHLIB_SUFFIX) \
+  $(HOST_LIBRARY_PATH)/libevent$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libprotobuf-cpp-lite$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libssl-host$(HOST_SHLIB_SUFFIX) \
   $(HOST_LIBRARY_PATH)/libz-host$(HOST_SHLIB_SUFFIX) \