Remove unnecessary CMake modules from Travis script

.travis.yml

@@ -35,8 +35,8 @@ before_script:
   - cd googletest-release-1.7.0
   - cmake .
   - make
-  # Move back into the cloned LOOT repo path.
-  - cd $TRAVIS_BUILD_DIR/build
+  # Move into the cloned LOOT repo build path.
+  - mkdir $TRAVIS_BUILD_DIR/build && cd $TRAVIS_BUILD_DIR/build
   # Fetch plugins to test with.
   - wget https://github.com/WrinklyNinja/testing-plugins/archive/1.0.0.tar.gz -O - | tar -xz
   - mv testing-plugins-1.0.0/* ./

scripts/install-step.travis.sh

@@ -1,10 +1,7 @@
 #!/bin/bash
 set -ev
 
-# Currently inside the cloned repo path.
-# Get the 3rd-party CMake modules.
-wget -P build https://raw.githubusercontent.com/rpavlik/cmake-modules/master/GetGitRevisionDescription.cmake
-wget -P build https://raw.githubusercontent.com/rpavlik/cmake-modules/master/GetGitRevisionDescription.cmake.in
+# Move out of LOOT repo path.
 cd ../..
 
 # Install libespm.