Clean up redundant experimental flowconfig options

Summary:
Both new_signatures and abstract_locations are now enabled by default, so we don't need the configuration. Both options are going to be removed soon as well.

Changelog: [Internal]

Reviewed By: gkz

Differential Revision: D27319298

fbshipit-source-id: 30e6dcd2d30a45f630388998957c8db39895a8f7

.flowconfig

@@ -47,9 +47,6 @@ suppress_type=$FlowFixMeProps
 suppress_type=$FlowFixMeState
 suppress_type=$FlowFixMeEmpty
 
-experimental.abstract_locations=true
-experimental.new_signatures=true
-
 [lints]
 sketchy-null-number=warn
 sketchy-null-mixed=warn

.flowconfig.android

@@ -47,9 +47,6 @@ suppress_type=$FlowFixMeProps
 suppress_type=$FlowFixMeState
 suppress_type=$FlowFixMeEmpty
 
-experimental.abstract_locations=true
-experimental.new_signatures=true
-
 [lints]
 sketchy-null-number=warn
 sketchy-null-mixed=warn