Remove redundant rows and add note on collection flow

Author: joefarebrother

java/ql/src/semmle/code/java/frameworks/guava/Base.qll

@@ -21,13 +21,12 @@ private class GuavaBaseCsv extends SummaryModelCsv {
         "com.google.common.base;Joiner;false;withKeyValueSeparator;(String);;Argument[0];ReturnValue;taint",
         "com.google.common.base;Joiner;false;withKeyValueSeparator;(String);;Argument[-1];ReturnValue;taint",
         "com.google.common.base;Joiner;false;withKeyValueSeparator;(char);;Argument[-1];ReturnValue;taint",
-        "com.google.common.base;Joiner;false;appendTo;;;Argument;ReturnValue;taint",
+        // Note: The signatures of some of the appendTo methods involve collection flow
         "com.google.common.base;Joiner;false;appendTo;;;Argument;Argument[0];taint",
         "com.google.common.base;Joiner;false;appendTo;;;Argument[0];ReturnValue;value",
         "com.google.common.base;Joiner;false;join;;;Argument;ReturnValue;taint",
         "com.google.common.base;Joiner$MapJoiner;false;useForNull;(String);;Argument[0];ReturnValue;taint",
         "com.google.common.base;Joiner$MapJoiner;false;useForNull;(String);;Argument[-1];ReturnValue;taint",
-        "com.google.common.base;Joiner$MapJoiner;false;appendTo;;;Argument;ReturnValue;taint",
         "com.google.common.base;Joiner$MapJoiner;false;appendTo;;;Argument;Argument[0];taint",
         "com.google.common.base;Joiner$MapJoiner;false;appendTo;;;Argument[0];ReturnValue;value",
         "com.google.common.base;Joiner$MapJoiner;false;join;;;Argument;ReturnValue;taint",