Drop old Ruby builds from Travis

Author: pirj

.travis.yml

@@ -53,12 +53,7 @@ function run_cukes {
 
     echo "${PWD}/bin/cucumber"
 
-    if is_mri_192; then
-      # For some reason we get SystemStackError on 1.9.2 when using
-      # the bin/cucumber approach below. That approach is faster
-      # (as it avoids the bundler tax), so we use it on rubies where we can.
-      bundle exec cucumber --strict
-    elif is_jruby; then
+    if is_jruby; then
       # For some reason JRuby doesn't like our improved bundler setup
       RUBYOPT="-I${PWD}/../bundle -rbundler/setup" \
          PATH="${PWD}/bin:$PATH" \
@@ -88,7 +83,7 @@ function run_spec_suite_for {
       echo "Running specs for $1"
       pushd ../$1
       unset BUNDLE_GEMFILE
-      bundle_install_flags=`cat .travis.yml | grep bundler_args | tr -d '"' | grep -o " .*"`
+      bundle_install_flags="--binstubs --standalone --without documentation --path ../bundle"
       travis_retry eval "(unset RUBYOPT; exec bundle install $bundle_install_flags)"
       run_specs_and_record_done
       popd