board_info.txt: Remove some needless name overrides.

Overrides were to have names in line with wiki but names derived from the
tree are better in some cases.

Change-Id: Ic805ba9a3b9c7f926dc9ef27f8673f2c18e9af34
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4737
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

src/mainboard/abit/be6-ii_v2_0/board_info.txt

@@ -1,4 +1,3 @@
-Board name: Abit BE6-II V2.0
 Category: desktop
 Board URL: http://www.extremeoverclocking.com/reviews/motherboards/BE6-II_v2_1.html
 ROM package: DIP32

src/mainboard/amd/bimini_fam10/board_info.txt

@@ -1,2 +1 @@
-Board name: Bimini
 Category: eval

src/mainboard/amd/tilapia_fam10/board_info.txt

@@ -1,2 +1 @@
-Board name: Tilapia
 Category: eval

src/mainboard/hp/dl165_g6_fam10/board_info.txt

@@ -1,3 +1,2 @@
-Board name: ProLiant DL165 G6
 Category: server
 Board URL: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01765799

src/mainboard/lippert/frontrunner/board_info.txt

@@ -1,4 +1,3 @@
-Board name: Cool FrontRunner
 Category: half
 Board URL: http://www.lippertembedded.com/en/productoverview/products-in-detail/85-lipperts-cool-frontrunner.html
 ROM package: PLCC