revert custom uuid number to 10

Author: hathach

changelog.md

@@ -16,7 +16,6 @@
 
 - Fixed Characteristic Descriptor discovery issue with ancs
 - Fixed memory issue with discovery characteristic
-- Increased BLE_VENDOR_UUID_MAX from 10 to 20
 
 ## 0.7.0
 

libraries/Bluefruit52Lib/src/bluefruit.h

@@ -45,7 +45,7 @@
 // Note changing these parameters will affect APP_RAM_BASE
 // --> need to update RAM in feather52_s132.ld linker
 #define BLE_GATTS_ATTR_TABLE_SIZE        0x0B00
-#define BLE_VENDOR_UUID_MAX              20
+#define BLE_VENDOR_UUID_MAX              10
 #define BLE_PRPH_MAX_CONN                1
 #define BLE_CENTRAL_MAX_CONN             4
 #define BLE_CENTRAL_MAX_SECURE_CONN      1 // should be enough