Revert "Add extra debug info in emscripten-entry.sh"

This reverts commit 89e8ae6a.

ci/emscripten-entry.sh

@@ -12,11 +12,9 @@
 set -ex
 
 # shellcheck disable=SC1091
-echo "IN EMSCRIPTEN ENTRY"
-source /emsdk-portable/emsdk_env.sh
+source /emsdk-portable/emsdk_env.sh &> /dev/null
 
 # emsdk-portable provides a node binary, but we need version 8 to run wasm
 export PATH="/node-v12.3.1-linux-x64/bin:$PATH"
 
-echo "RUNNING with PATH=$PATH"
 exec "$@"