Add .ant-targets-build.xml to the ignore list - ant generates this automatically when using bash completion.

Change-Id: I11ef3fd6d297c61dcc6108170fda04c5282f23fc

.gitignore

@@ -61,6 +61,7 @@ tmp/**/*
 .gradle
 *.patch
 *.swp
+.ant-targets-build.xml
 
 # C
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