fixing travis build

.travis.yml

@@ -1,11 +1,7 @@
 
 env:
   matrix:
-    - TARGET=K82F
-    - TARGET=NRF52840_DK
-    - TARGET=K64F
-    - TARGET=UBLOX_EVK_ODIN_W2
-    - TARGET=NUCLEO_F429ZI
+
   global:
     - >
       STATUS=$'curl -so/dev/null --user $MBED_BOT --request POST
@@ -53,21 +49,12 @@ install:
   - python --version
 
 script:
-  # Check that example compiles with spif
-  - mbed compile -t GCC_ARM -m $TARGET -j0
-
-  # Check that example compiles with dataflash
-  - sed -i 's/SPIFBlockDevice bd/DataFlashBlockDevice bd/g' main.cpp
-  - sed -i 's/MBED_CONF_SPIF_DRIVER/MBED_CONF_DATAFLASH/g' main.cpp
-  - mbed compile -t GCC_ARM -m $TARGET -j0
-
   # Check that example compiles with sd
-  - sed -i 's/DataFlashBlockDevice bd/SDBlockDevice bd/g' main.cpp
-  - sed -i 's/MBED_CONF_DATAFLASH/MBED_CONF_SD/g' main.cpp
-  - mbed compile -t GCC_ARM -m $TARGET -j0
+  - mbed compile -t GCC_ARM -m K64F -j0
+
+  # Check that example compiles with spif
+  - sed -i 's/SDBlockDevice bd/SPIFBlockDevice bd/g' main.cpp
+  - sed -i 's/MBED_CONF_SD/MBED_CONF_SPIF_DRIVER/g' main.cpp
+  - mbed compile -t GCC_ARM -m $K82F -j0
 
-  # Check that example compiles with heap
-  - sed -i 's/SDBlockDevice bd(/HeapBlockDevice bd(1024*512, 512);/g' main.cpp
-  - sed -i '/MBED_CONF_SD/d' main.cpp
-  - mbed compile -t GCC_ARM -m $TARGET -j0