can't use R 3.0 anyway until hadley/lazyeval#87 is fixed

Author: krlmlr

DESCRIPTION

@@ -13,7 +13,7 @@ Authors@R: c(
 URL: https://github.com/tidyverse/tibble
 BugReports: https://github.com/tidyverse/tibble/issues
 Depends:
-    R (>= 3.0.0)
+    R (>= 3.1.0)
 Imports:
     methods,
     assertthat,

appveyor.yml

@@ -23,10 +23,6 @@ environment:
     WARNINGS_ARE_ERRORS: 1
 
   matrix:
-  - R_VERSION: 3.0.3
-    RTOOLS_VERSION: 31
-    CRAN: http://cran.rstudio.com
-
   - R_VERSION: devel
     GCC_PATH: mingw_32