Update proguard-rules.pro (#283)

Author: pedrovgs

dexter/proguard-rules.pro

@@ -1,10 +1,8 @@
--renamesourcefileattribute SourceFile
-
 # Preserve all Dexter classes and method names
 
 -keepattributes InnerClasses, Signature, *Annotation*
 
 -keep class com.karumi.dexter.** { *; }
 -keep interface com.karumi.dexter.** { *; }
 -keepclasseswithmembernames class com.karumi.dexter.** { *; }
--keepclasseswithmembernames interface com.karumi.dexter.** { *; }
+-keepclasseswithmembernames interface com.karumi.dexter.** { *; }