Remove All wood and rock

01)--- Open farmvill 2

02)--- Open cheat engine 6.2

03)--- Select process icon ( It is left hand corner and under the file )

04)--- Select 2 nd firefox plugin and open

05)--- Change Value Type  to  Sring


06)--- Search for "obstruction_rock" 

07)--- Select all and click red arrow

08)--- Then search for "obstruction_stump"

09)--- Select all and click red arrow.

10)--- Add them and replace them with "e_deco_shrub-round"

11)--- Visit a neighbor's farm and then go back to your farm. 

    Now the rock and wood will be gone. No need for saws or pickaxes.