DSM: Destroy test data to trigger decoding fails and test recovery

unittests/testdata/dsm_x_data.txt

@@ -946,14 +946,12 @@ Time [s],Value,Parity Error,Framing Error
 9.909878000000001,0x00,,
 9.909964000000000,0x00,,
 9.910052000000000,0x0C,,
-9.910138000000000,0x00,,
 9.910226000000000,0x2E,,
 9.910314000000000,0xAA,,
 9.910399999999999,0x14,,
 9.910488000000001,0x00,,
 9.910574000000000,0x1C,,
 9.910662000000000,0x00,,
-9.910750000000000,0x26,,
 9.910836000000000,0xAA,,
 9.910924000000000,0x44,,
 9.911009999999999,0x00,,
@@ -975,8 +973,6 @@ Time [s],Value,Parity Error,Framing Error
 9.922012000000000,0x00,,
 9.922100000000000,0x36,,
 9.922186000000000,0xAA,,
-9.931880000000000,0x00,,
-9.931965999999999,0x00,,
 9.932054000000001,0x0C,,
 9.932140000000000,0x00,,
 9.932228000000000,0x2E,,
@@ -1008,15 +1004,6 @@ Time [s],Value,Parity Error,Framing Error
 9.944110000000000,0x36,,
 9.944196000000000,0xAA,,
 9.953882000000000,0x00,,
-9.953968000000000,0x00,,
-9.954056000000000,0x0C,,
-9.954141999999999,0x00,,
-9.954230000000001,0x2E,,
-9.954318000000001,0xAA,,
-9.954404000000000,0x14,,
-9.954492000000000,0x00,,
-9.954578000000000,0x1C,,
-9.954666000000000,0x00,,
 9.954751999999999,0x26,,
 9.954840000000001,0xAA,,
 9.954928000000001,0x44,,