add the symbol for LDO LM2931 to regul.lib
add the symbol for LDO LM2931 to regul.lib
add the symbol for LDO LM2931 to regul.lib
add the symbol for LDO LM2931AZ-3.3/5.0 to regul.lib
remove 3.3V version
Merge pull request #19 from andres53016/master

add the symbol for LDO LM2931 to regul.lib