SWDEV-470698 - add common .clang-format inside main folder

Remove the redundant copies inside sub folders. This was useful when
these projects were independent but now since they are merged they
should have one single .clang-format file.

Change-Id: I60510d7b78b129c761e84f13403492bd0c5d941a

rocclr/.clang-format

@@ -1,10 +0,0 @@
-Language: Cpp
-BasedOnStyle: Google
-AlignEscapedNewlinesLeft: false
-AlignOperands: false
-ColumnLimit: 100
-AlwaysBreakTemplateDeclarations: false
-DerivePointerAlignment: false
-IndentFunctionDeclarationAfterType: false
-MaxEmptyLinesToKeep: 2
-SortIncludes: false