Libraries bundled with cores will take the type of that core, instead of relying on an undocumented 'types' property. Fixes arduino#2875

Author: Federico Fissore

libraries/SPI/library.properties

@@ -6,5 +6,4 @@ sentence=Enables the communication with devices that use the Serial Peripheral I
 paragraph=
 url=http://arduino.cc/en/Reference/SPI
 architectures=sam
-types=Arduino
 

libraries/Wire/library.properties

@@ -6,5 +6,4 @@ sentence=Allows the communication between devices or sensors connected via Two W
 paragraph=
 url=http://arduino.cc/en/Reference/Wire
 architectures=sam
-types=Arduino