Remove duplicate paths in Android build section, spotted by @Sporif

jedisct1 · jedisct1 · commit aea15a484edd · 2018-02-23T09:12:27.000+01:00
Fixes #174
diff --git a/.travis.yml b/.travis.yml
@@ -206,6 +206,3 @@ before_install:
     done
 
   - rm -rf $NDK_TOOLS
-
-  - PATH=$PATH:$NDK_STANDALONE/arm/bin
-  - PATH=$PATH:$NDK_STANDALONE/arm64/bin
