Revert colors of some languages.

Revert colors of some languages which have 'type: data' attribute.

lib/linguist/languages.yml

@@ -153,7 +153,6 @@ Ant Build System:
   - ant.xml
   - build.xml
   ace_mode: xml
-  color: "#C64A9A"
 
 ApacheConf:
   type: markup
@@ -1210,7 +1209,6 @@ Gradle:
   - .gradle
   tm_scope: source.groovy.gradle
   ace_mode: text
-  color: "#4B0283"
 
 Grammatical Framework:
   type: programming
@@ -2027,7 +2025,6 @@ Maven POM:
   filenames:
   - pom.xml
   ace_mode: xml
-  color: "#007915"
 
 Max:
   type: programming
@@ -3694,7 +3691,6 @@ XML:
   - Web.Release.config
   - Web.config
   - packages.config
-  color: "#E88E88"
 
 XPages:
   type: programming
@@ -3773,7 +3769,6 @@ YAML:
   - .yaml
   - .yaml-tmlanguage
   ace_mode: yaml
-  color: "#56789A"
 
 Yacc:
   type: programming